Skip to main content

Insecure Deserialization

web CRITICAL

Insecure deserialization occurs when an application converts serialized data (a stream of bytes representing an object's state) back into a living object without proper validation.

How It Works

Insecure deserialization occurs when an application converts serialized data (a stream of bytes representing an object's state) back into a living object without proper validation. Serialization frameworks in languages like Java, PHP, Python, and .NET allow objects to be transformed into byte streams for storage or transmission, then reconstructed later. The vulnerability arises because deserialization can trigger code execution through the object's methods during reconstruction.

Attackers exploit this by crafting malicious serialized payloads containing specially chosen objects that chain together through "gadget chains" — sequences of method calls in existing application libraries. When the application deserializes the attacker's payload, it automatically invokes these methods in sequence, ultimately achieving arbitrary code execution. For example, in Java applications, an attacker might create a serialized object that, when deserialized, triggers a chain through Apache Commons Collections classes, ending in runtime command execution.

The attack typically begins with identifying an endpoint that accepts serialized data — often in cookies, API parameters, or message queue payloads. The attacker then uses tools like ysoserial (Java) or phpggc (PHP) to generate weaponized payloads targeting known gadget chains in the application's dependencies. Because deserialization happens automatically and often before any application logic executes, these attacks frequently bypass authentication and input validation.

Impact

  • Remote code execution — attackers gain complete control of the server, executing arbitrary system commands
  • Authentication bypass — deserializing manipulated user/session objects grants unauthorized access without credentials
  • Privilege escalation — modifying serialized role or permission objects to gain administrative access
  • Data exfiltration — reading sensitive files or database contents through executed code
  • Denial of service — crafting objects that consume excessive memory or CPU during deserialization

Real-World Examples

SolarWinds Web Help Desk suffered two separate deserialization vulnerabilities in rapid succession. CVE-2025-40551 allowed unauthenticated attackers to achieve remote code execution by sending malicious serialized Java objects to the application. Even after patching, researchers discovered a second deserialization flaw in the same product, demonstrating how deeply embedded these vulnerabilities can be in application architectures.

Jenkins automation servers have experienced multiple Java deserialization vulnerabilities where attackers exploited the CLI protocol to send crafted objects, gaining full control over build servers. These attacks were particularly severe because Jenkins instances often have extensive network access and stored credentials for deploying applications.

WordPress and other PHP applications have faced attacks through unserialize() vulnerabilities in plugins, where attackers embedded malicious PHP objects in user-controllable data fields. Successful exploitation enabled attackers to install backdoors by writing arbitrary PHP files to the web root.

Mitigation

  • Avoid deserializing untrusted data entirely — redesign systems to use data-only formats like JSON instead of native serialization
  • Implement strict allowlists — configure deserialization libraries to only accept explicitly permitted classes, blocking all others
  • Apply cryptographic signatures — sign serialized data and validate signatures before deserialization to ensure integrity
  • Use isolated environments — deserialize in sandboxed processes with minimal privileges to contain potential exploitation
  • Update vulnerable libraries — patch frameworks and remove dependencies with known gadget chains
  • Monitor deserialization activity — log and alert on deserialization operations, especially from external sources

Recent CVEs (3138)

EPSS 0% CVSS 9.8
CRITICAL PATCH Act Now

Remote code execution in JetBrains Kotlin before 2.4.20 stems from unsafe deserialization (CWE-502) of build cache metadata, allowing an attacker who can influence cached build artifacts to execute arbitrary code during a build. The flaw carries a CVSS 9.8 (C:H/I:H/A:H) rating, but there is no public exploit identified at time of analysis and EPSS is very low (0.11%, 2nd percentile), and CISA SSVC marks exploitation as 'none'. JetBrains, who reported the issue, has released a fixed version (2.4.20).

RCE Deserialization Kotlin +1
NVD VulDB
EPSS 1% CVSS 7.7
HIGH PATCH This Week

Unsafe Java deserialization in OpenAM Community Edition's Push Notification SNS callback route (through version 16.0.6) allows a low-privileged user who can start Push Registration to plant an attacker-controlled predicate blob in the CTS store, which OpenAM later loads by attacker-supplied class name and deserializes with Jackson when an anonymous SNS callback references the same messageId. The result is a reliable server-side class-loading and arbitrary-object-construction primitive that can corrupt push-token records and trigger classpath-dependent side effects such as process execution, file writes, or denial of service; the vendor explicitly states that arbitrary attacker-controlled code execution was not confirmed on stock classpaths, so real-world severity hinges on what classes are reachable in the deployment. The flaw is patched in 16.1.1 (commit ca15cba, GHSA-pp89-732f-3g8q); there is no CISA KEV listing and no public exploit code identified at time of analysis.

RCE Java Deserialization
NVD GitHub
EPSS 0% CVSS 8.8
HIGH This Week

PHP Object Injection in the EventPrime event-calendar-management WordPress plugin (versions 4.3.4.1 and earlier) allows an authenticated attacker holding only a low-privilege Subscriber account to inject crafted serialized objects into an unsafe deserialization sink. Depending on the PHP gadget chains present in WordPress core, the plugin, or other installed plugins, this can escalate to data tampering, information disclosure, or remote code execution. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV; it was reported by Patchstack.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Arbitrary code execution in MosaicML Composer arises when the library loads a model or resumption checkpoint, because checkpoint parsing deserializes attacker-controlled pickle data without validation (CWE-502). A user who loads a maliciously crafted checkpoint (.pt) file - for example one downloaded from a model hub or shared by a collaborator - runs arbitrary Python code in the context of the training process. Reported through ZDI (ZDI-26-384, ZDI-CAN-27990); no public exploit identified at time of analysis and the issue is not listed in CISA KEV, but an upstream source fix is available.

RCE Deserialization Composer
NVD GitHub
EPSS 1% CVSS 9.2
CRITICAL PATCH Act Now

Arbitrary code execution in Open Identity Platform OpenAM Community Edition (through 16.0.6) arises from unsafe Java deserialization (CWE-502) in the WebAuthn authentication module, which calls Apache Commons SerializationUtils.deserialize() on bytes read from a user storage attribute without any class allow-listing. If an attacker can plant a malicious serialized gadget chain into the WebAuthn userAttribute/storage attribute and reach the WebAuthn flow, they run code as the application-server user. This is not the default configuration and no public exploit or KEV listing exists; EPSS is 0.69% (51st percentile). Fixed in 16.1.1.

RCE Deserialization
NVD GitHub
EPSS 1% CVSS 9.3
CRITICAL POC PATCH Act Now

Remote code execution in Feast (the open-source ML feature store) before 0.63.0 lets remote attackers run OS commands as the feast service account by sending a crafted ApplyFeatureView gRPC request to the registry server. The registry base64-decodes the user_defined_function.body field of an OnDemandFeatureView and passes it to dill.loads() before any authorization check, so no credentials are required. A publicly available exploit code exists (reported by VulnCheck via huntr) and a vendor patch is available, though the flaw is not listed in CISA KEV.

RCE Python Deserialization +1
NVD GitHub
EPSS 1% CVSS 8.1
HIGH POC PATCH This Week

PolymorphicTypeValidator bypass in jackson-databind versions 2.10.0 through 2.18.7, 2.19.0 through 2.21.3, and 3.0.0 through 3.1.3 allows attackers controlling JSON type identifiers to smuggle denied gadget classes through allow-listed generic containers, leading to arbitrary class instantiation and potential remote code execution. The flaw stems from DatabindContext._resolveAndValidateGeneric() validating only the raw container class name while skipping all nested generic type arguments. No public exploit identified at time of analysis, but the GHSA advisory includes a proof-of-concept configuration and payload structure.

Deserialization Red Hat Canonical +3
NVD GitHub HeroDevs VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Remote code execution in Spring Statemachine 3.2.0-3.2.4 and 4.0.0-4.0.1 allows authenticated attackers to execute arbitrary code inside the application JVM by injecting malicious serialized Java objects into the Kryo-based persistence backends (JPA, MongoDB, Redis, or ZooKeeper). The flaw stems from deserializing persisted state-machine contexts without enforcing a class allowlist, a classic CWE-502 pattern that has historically yielded reliable gadget-chain exploitation in Java applications. No public exploit identified at time of analysis, but the deserialization sink and Kryo gadget ecosystem make weaponization straightforward once an attacker can write to the persistence store.

RCE Java Deserialization +3
NVD HeroDevs VulDB
EPSS 1% CVSS 8.1
HIGH This Week

Remote code execution in Pivotal CRM 6.6.04.08 Smart Client arises from insecure deserialization in the Pivotal.Core.Common.dll and Pivotal.Engine.Client.Services.Conversion.dll components, allowing remote attackers to execute arbitrary code on affected installations. The vendor (Aurea/Pivotal) has published a remediation advisory and a researcher has released a public technical advisory, but the issue is not currently listed in CISA KEV and SSVC indicates no observed exploitation. CVSS 8.1 reflects high impact tempered by high attack complexity, while no public exploit identified at time of analysis is corroborated by SSVC's 'Exploitation: none'.

RCE Deserialization N A
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Local arbitrary code execution in Glances versions prior to 4.5.5 occurs when the daemon deserializes its version-check cache file via pickle.load() without integrity validation. An attacker with write access to the Glances user's XDG cache directory (~/.cache/glances/glances-version.db) can plant a malicious pickle that executes as the Glances process user - frequently root - on next startup. Publicly available exploit code exists in the GHSA advisory, but no public exploit identified at time of analysis as actively weaponized.

Privilege Escalation RCE Python +3
NVD GitHub VulDB
EPSS 1% CVSS 9.2
CRITICAL PATCH Act Now

Unauthenticated remote code execution in Open Identity Platform's OpenDJ Community Edition (through 5.1.0) arises from Java deserialization of untrusted data in the JMX RMI connector, which reads and processes attacker-controlled bytes before authentication. Any attacker with TCP reachability to the configured JMX listener can deliver a malicious serialized object gadget chain and execute code on the directory server; the vendor demonstrated working RCE on OpenDJ 4.4.15 (JDK 11 + Jackson 2.12.6.1). No CISA KEV listing and no public exploit code identified at time of analysis, though a vendor proof-of-concept demonstration is documented in the advisory.

RCE Java Deserialization
NVD GitHub
EPSS 1% CVSS 8.8
HIGH PATCH This Week

Remote code execution in Spinnaker's Rosco and Orca services arises because YAML input is parsed with SnakeYAML's unsafe default Constructor rather than a SafeConstructor, letting authenticated users who trigger CloudFormation deployments or CloudFoundry baking load arbitrary Java classes. An attacker with pipeline access can supply a crafted YAML tag (e.g. !!javax.script.ScriptEngineManager) to instantiate dangerous classes and reach code execution on the affected service host. No public weaponized exploit is identified, though the vendor fix commit ships tests demonstrating the arbitrary-object-instantiation primitive, and the flaw is not listed in CISA KEV.

Java Deserialization
NVD GitHub VulDB
EPSS 1% CVSS 9.5
CRITICAL POC Act Now

Unauthenticated remote code execution in JoomShaper's SP LMS (com_splms) Joomla extension versions 1.0.0 through 4.1.3 allows network attackers to run arbitrary code on the server by sending a crafted cookie that the component deserializes without validation. The flaw is a textbook PHP object injection (CWE-502) with a CVSS 4.0 base score of 9.5, but at time of analysis there is no public exploit identified and the issue is not on the CISA KEV list. Risk is elevated because the trigger is a cookie value parsed before any authentication check.

RCE Deserialization Sp Lms Extension For Joomla
NVD VulDB Exploit-DB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Arbitrary code execution in Stanford NLP's Stanza 1.12.0 (and ≤1.12.1) occurs when the library loads a malicious PyTorch checkpoint, because its pretrain loader silently falls back from torch.load(weights_only=True) to weights_only=False whenever an UnpicklingError is raised - a condition the attacker fully controls by embedding one unsupported pickle global. Publicly available exploit code exists (working PoC in the GHSA advisory), and any developer, CI pipeline, or production NLP service that downloads Stanza model files from HuggingFace, GitHub, or a shared cache can be compromised. Fixed in Stanza 1.12.2.

RCE Python Deserialization +2
NVD GitHub VulDB
EPSS 1% CVSS 8.1
HIGH PATCH This Week

PHAR deserialization in PhpWeasyPrint versions prior to 2.6.0 allows remote code execution by bypassing the case-sensitive phar:// blacklist introduced for CVE-2023-28115 - because PHP stream wrappers are case-insensitive, schemes like PHAR:// or PhAr:// pass the check and reach file_exists() in prepareOutput(). When the library runs on PHP 7.4+ and an attacker can influence the output filename argument passed to generation methods, a crafted PHAR archive's metadata is unserialized via a gadget chain, yielding code execution. No CISA KEV listing and no public exploit identified at time of analysis for this specific CVE, although the equivalent upstream KnpLabs/snappy advisory (GHSA-92rv-4j2h-8mjj) ships a working phpggc-based PoC that is directly portable.

PHP RCE Deserialization +2
NVD GitHub
EPSS 1% CVSS 9.5
CRITICAL PATCH Act Now

Remote unauthenticated access to two SQL Editor endpoints in pgAdmin 4 server-mode deployments (versions 6.9 through 9.15) exposes a pickle.loads sink that can be reached without a valid pgAdmin session. The defect is the missing @pga_login_required decorator on DELETE /sqleditor/close/<trans_id> and POST /sqleditor/initialize/sqleditor/update_connection/<sgid>/<sid>/<did>; turning this into code execution additionally requires an attacker to possess the Flask SECRET_KEY and write access to the sessions/ directory from a separate channel. No public exploit identified at time of analysis, and the issue does not appear on CISA KEV.

Authentication Bypass RCE Python +3
NVD GitHub VulDB
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

Server-side template injection in JTL Shop 5.2.0 through 5.7.1 allows remote unauthenticated attackers to inject Smarty template syntax via unsanitized user input, exposing sensitive server-side values like database credentials and encryption keys. On versions 5.4.0 through 5.7.1, the flaw escalates to remote code execution by abusing registered Smarty modifiers (unserialize, file_get_contents) to drop a webshell and execute commands as the web server user. Publicly available exploit code exists via the Sansec research writeup, though no public exploit identified at time of analysis in CISA KEV.

Deserialization Ssti Jtl Shop
NVD VulDB
EPSS 1% CVSS 9.3
CRITICAL PATCH Act Now

Remote code execution in iba ibaPDA and ibaDatCoordinator allows unauthenticated network attackers to gain full system control by exploiting an unsafe deserialization flaw (CWE-502). The CVSS 4.0 score of 9.3 reflects network-reachable exploitation with no privileges or user interaction and high impact across confidentiality, integrity, and availability. No public exploit identified at time of analysis and the issue is not listed in CISA KEV, but the trivial attack profile makes it a high priority for industrial environments running these data acquisition products.

Deserialization Ibapda Ibadatcoordinator
NVD VulDB
EPSS 0% 4.9 CVSS 9.3
CRITICAL POC KEV EUVD KEV THREAT Emergency

Remote code execution in PTC Windchill PDMlink and PTC FlexPLM allows unauthenticated network attackers to execute arbitrary code via deserialization of untrusted data. All releases prior to 11.0 M030 are affected, as are all CPS versions, and no public exploit identified at time of analysis. Reported by PTC themselves, the flaw carries a CVSS 4.0 base score of 9.3 (critical) reflecting high impact across confidentiality, integrity, and availability without requiring authentication or user interaction.

RCE Deserialization Windchill Pdmlink +2
NVD VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Denial of service in Steeltoe.Discovery.Eureka client (.NET) versions prior to 4.2.0 and 3.4.0 allows a remote Eureka registry containing service registrations with DataCenterInfo.name="Netflix" to permanently break the local service discovery cache. The client's DataCenterInfo.FromJson rejects any value other than "MyOwn" or "Amazon" with an ArgumentException that is silently swallowed by the periodic cache refresh task, leaving downstream .NET services unable to discover peers. No public exploit identified at time of analysis, but the trigger is trivially reachable in mixed Java/Spring-Cloud and Steeltoe environments.

Java Deserialization Steeltoe Discovery Eureka +1
NVD GitHub VulDB
EPSS 1% CVSS 9.3
CRITICAL PATCH Act Now

Unauthenticated remote code execution in NVIDIA Spatial Intelligence Lab's GEN3C inference API server allows network attackers to execute arbitrary Python code by sending crafted pickle payloads to the /request-inference and /seed-model endpoints. The endpoints feed raw HTTP bodies directly into pickle.loads() with no authentication or validation, so a standard __reduce__ gadget yields code execution as the inference process. No public exploit identified at time of analysis, but the upstream patch and a VulnCheck advisory document the precise vulnerable code path.

RCE Python Deserialization +2
NVD GitHub
EPSS 1% CVSS 9.3
CRITICAL PATCH Act Now

Arbitrary code execution in picklescan versions prior to 1.0.1 allows attackers to bypass the scanner's malicious pickle detection by obfuscating eval calls nested under callable objects via getattr, causing the very tool intended to detect malicious pickles to miss them. Publicly available exploit code exists via the GHSA advisory PoC, though no public exploit identified at time of analysis as actively used in attacks; the CVSS 4.0 score of 9.3 reflects unauthenticated network-reachable impact on confidentiality, integrity, and availability.

RCE Deserialization Picklescan
NVD GitHub VulDB
EPSS 1% CVSS 8.7
HIGH PATCH This Week

Arbitrary file read in picklescan versions before 0.0.35 allows remote unauthenticated attackers to exfiltrate sensitive server files by abusing standard-library callables that the tool's RCE-focused blocklist fails to detect. By chaining io.FileIO and urllib.request.urlopen inside a malicious pickle, an attacker can stream contents of files such as /etc/passwd to an attacker-controlled URL when the scanner processes untrusted model artifacts. Publicly available exploit code exists in the GHSA advisory, but there is no public exploit identified at time of analysis in the form of in-the-wild abuse.

Information Disclosure Path Traversal Deserialization +1
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL Act Now

Remote code execution via unauthenticated PHP Object Injection affects the Moderno WordPress theme in all versions prior to 1.43, enabling attackers to send crafted serialized payloads that trigger malicious object instantiation. With CVSS 9.8 and a fully remote, no-interaction attack vector, successful exploitation hinges on the presence of usable POP gadget chains in WordPress core or co-installed plugins. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Mikado-Themes 'Château' WordPress theme (versions ≤ 1.2.1) allows remote attackers to deserialize attacker-controlled data, potentially leading to arbitrary code execution, file manipulation, or full site compromise when a suitable POP gadget chain is present in the WordPress stack. The flaw was disclosed via Patchstack with CVSS 8.1 (high) due to network-reachable, unauthenticated impact across confidentiality, integrity, and availability, though high attack complexity (AC:H) reflects the dependency on a usable gadget chain. No public exploit identified at time of analysis.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Mikado-Themes Zoya WordPress theme versions 1.4 and earlier allows remote attackers to inject crafted serialized objects that are deserialized by the application. Successful exploitation can lead to arbitrary code execution, data tampering, or denial of service depending on the gadget chains present in WordPress core, plugins, or other themes loaded on the site. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Manufaktur Solutions WordPress theme (versions 1.1.1 and earlier) allows remote attackers to deserialize attacker-controlled data, potentially leading to arbitrary code execution, data tampering, or denial of service when a suitable PHP gadget chain is present. The CVSS 3.1 score of 8.1 reflects high impact across confidentiality, integrity, and availability, tempered by AC:H due to dependency on exploitable gadget chains in the WordPress runtime. No public exploit identified at time of analysis and the issue is not listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Eldon WordPress theme (versions <= 1.4.1) by Edge-Themes allows remote attackers to inject arbitrary PHP objects through unsafe deserialization, potentially leading to remote code execution, data theft, or site compromise when a suitable POP gadget chain is present in the WordPress environment. No public exploit identified at time of analysis, and Patchstack rates this CVSS 8.1 (High) with high attack complexity reflecting the need for a usable gadget chain.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Mikado Themes ShiftUp WordPress theme (versions ≤ 1.3) allows remote attackers to pass attacker-controlled serialized data into a PHP unserialize() sink, potentially triggering gadget chains that can lead to remote code execution, data tampering, or site takeover. CVSS is rated 8.1 with high attack complexity but no privileges or user interaction required, and no public exploit identified at time of analysis. The issue was disclosed via Patchstack.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the SingleMalt WordPress theme (versions up to and including 1.5) allows remote attackers to deserialize attacker-controlled data, which can lead to compromise of confidentiality, integrity, and availability of affected WordPress sites. The flaw is exploitable without authentication or user interaction but has high attack complexity per its CVSS vector, and no public exploit identified at time of analysis.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Select Themes 'Hiroshi' WordPress theme through version 1.5.1 allows remote attackers to supply crafted serialized payloads that are deserialized by the theme, potentially leading to code execution, file manipulation, or data compromise when a suitable PHP magic-method gadget chain is present in the WordPress stack. The flaw is reachable without authentication per the CVSS vector, and no public exploit has been identified at time of analysis.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection affects the Konsept WordPress theme (by elated-themes) in versions 1.9 and earlier, allowing remote attackers to inject crafted serialized PHP objects without authentication. Successful exploitation can lead to a full compromise of the WordPress site - high impact on confidentiality, integrity, and availability - though CVSS rates attack complexity as high, indicating non-trivial conditions are required. No public exploit identified at time of analysis.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Alukas WordPress theme (versions prior to 3.0.0) allows remote attackers to inject crafted serialized PHP objects into the application, potentially leading to remote code execution, file manipulation, or full site compromise when a usable POP gadget chain is present. No public exploit identified at time of analysis, and the issue is tracked by Patchstack as a deserialization flaw affecting the presslayouts:alukas product line. Real-world impact depends on the gadget chains available in WordPress core or co-installed plugins.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the PressMart WordPress theme versions 1.2.26 and earlier allows remote attackers to deliver malicious serialized payloads that are deserialized by the theme, potentially leading to property-oriented gadget chain abuse and full site compromise. The flaw was disclosed via Patchstack and carries a CVSS 8.1 (AV:N/AC:H/PR:N/UI:N) - no public exploit identified at time of analysis, and the high attack complexity reflects the need for a usable gadget chain to escalate from deserialization to concrete impact.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.4
HIGH This Week

Local privilege escalation in Quanos SCHEMA ST4 on-premises allows an authenticated local user to gain NT AUTHORITY\SYSTEM by abusing insecure .NET Remoting deserialization in the Client Update Service. The endpoint, reachable through a local named pipe with TypeFilterLevel.Full, accepts attacker-controlled serialized objects and yields arbitrary code execution in the update process context. No public exploit identified at time of analysis, though a SEC-Consult/SEC-VLab advisory documents the issue.

Privilege Escalation RCE Deserialization +1
NVD
EPSS 1% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP object injection in the WP Activity Log WordPress plugin versions 5.6.3.1 and earlier allows remote attackers to deliver crafted serialized payloads that are deserialized by the plugin, enabling abuse of any POP (property-oriented programming) gadget chain present in WordPress core, other active plugins, or themes. With a CVSS 3.1 base of 9.8 (AV:N/AC:L/PR:N/UI:N) and no authentication required, successful exploitation typically yields remote code execution, arbitrary file operations, or database compromise on the affected site. No public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV, but the unauthenticated network-reachable nature makes it a high-priority patch for any site running the plugin.

PHP WordPress Deserialization +3
NVD VulDB
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in Crocoblock JetEngine WordPress plugin versions 3.8.10 and earlier allows remote attackers to inject arbitrary PHP objects, potentially leading to full site compromise via gadget-chain abuse. The CVSS 9.8 score reflects network-reachable, no-authentication, no-interaction exploitation against a widely deployed commercial WordPress plugin. No public exploit identified at time of analysis, but the unsafe-deserialization class (CWE-502) historically yields fast weaponization once a usable POP chain is published.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 9.8
CRITICAL PATCH Act Now

Unauthenticated PHP Object Injection in the Thrive Apprentice WordPress plugin (versions prior to 10.8.10.2) allows remote attackers to inject arbitrary PHP objects that get deserialized by the application, potentially leading to remote code execution when a suitable POP gadget chain is present. The flaw is reachable without authentication and carries a CVSS 9.8 critical rating with full confidentiality, integrity, and availability impact. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

PHP Object Injection in the JetEngine WordPress plugin (versions through 3.8.9.1) allows authenticated users with the Contributor role to inject crafted serialized objects that are deserialized by the plugin, potentially leading to code execution or other gadget-chain abuse on the host site. The flaw, reported by Patchstack and tracked under CWE-502, requires only the low-privileged Contributor role rather than admin access, which significantly broadens the attacker pool on multi-author WordPress installations. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 1% CVSS 9.8
CRITICAL PATCH Act Now

Unauthenticated PHP Object Injection in the AI Lab WordPress theme versions prior to 5.4.2 enables remote attackers to deliver crafted serialized payloads to a vulnerable deserialization sink. With a CVSS 9.8 rating and no authentication required, successful exploitation can lead to arbitrary code execution, data theft, or full site takeover depending on which POP gadget chains are available in WordPress core or installed plugins. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection affects the Mikado-Themes EasyMeals WordPress theme through version 1.5.1, allowing remote attackers to inject crafted serialized objects that are deserialized by vulnerable PHP code paths. Successful exploitation can lead to high-impact compromise of confidentiality, integrity, and availability on the underlying WordPress site, though no public exploit identified at time of analysis. The CVSS 8.1 score reflects high attack complexity, consistent with the typical need for a usable gadget chain in the host WordPress environment.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Reina WordPress theme (versions 2.1 and earlier) by Edge Themes allows remote attackers to trigger insecure deserialization, potentially leading to arbitrary code execution, data tampering, or denial of service when a suitable PHP gadget chain is present in the WordPress instance. The flaw carries a CVSS 3.1 score of 8.1 (High) with no public exploit identified at time of analysis. The reference from Patchstack confirms the issue but no KEV listing or EPSS data is provided.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 9.8
CRITICAL PATCH Act Now

Unauthenticated PHP object injection in the WooCommerce Product Filters WordPress plugin (versions prior to 2.0.6) allows remote attackers to deserialize attacker-controlled data and trigger PHP magic methods on existing application gadgets. With a CVSS 9.8 (AV:N/AC:L/PR:N/UI:N) and CWE-502 root cause, successful exploitation can lead to remote code execution, arbitrary file operations, or full site takeover depending on available POP chains in WordPress core or co-installed plugins. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection affects the Select Themes Mildhill WordPress theme in versions 1.5 and earlier, allowing remote attackers to inject crafted serialized PHP objects that the application deserializes without validation. Successful exploitation can yield high confidentiality, integrity, and availability impact on the underlying WordPress site, typically by chaining the injected object with a POP gadget present in the theme, WordPress core, or another installed plugin. No public exploit identified at time of analysis, and the issue is reported via Patchstack rather than the CISA KEV catalog.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Zermatt WordPress theme versions 1.6.1 and earlier allows remote attackers to deliver malicious serialized PHP objects to a vulnerable unserialize() sink without prior authentication. Successful exploitation can lead to high impact on confidentiality, integrity, and availability when a suitable POP gadget chain is reachable in the WordPress installation. No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in Edge-Themes Valeska WordPress theme versions 1.2.2 and earlier allows remote attackers to trigger insecure deserialization, potentially leading to code execution, file manipulation, or full site compromise when suitable PHP magic-method gadgets are present in the WordPress stack. No public exploit identified at time of analysis, but Patchstack has catalogued the flaw and the high CVSS (8.1) reflects the serious confidentiality, integrity, and availability impact possible against affected installations.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Behold WordPress theme (versions ≤1.5) by edge-themes allows remote attackers to deliver crafted serialized payloads that are deserialized by the theme without validation. Successful exploitation can lead to full compromise of the affected WordPress site through gadget-chain abuse, with high confidentiality, integrity, and availability impact. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Mikado Themes 'Esmée' WordPress theme (versions through 1.4) allows remote attackers to inject crafted serialized objects that are processed by unsafe deserialization. Exploitation depends on the presence of usable PHP gadget chains (often from WordPress core or co-installed plugins/themes), and no public exploit identified at time of analysis, but successful attacks can lead to file write, SQL manipulation, or remote code execution on the underlying site. The CVSS 3.1 base score is 8.1 with high attack complexity, reflecting the gadget-chain dependency rather than the network-reachable, unauthenticated entry point itself.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Léonie WordPress theme (versions ≤ 1.2.1) by Elated Themes allows remote attackers to deserialize attacker-controlled data, potentially leading to arbitrary code execution, file manipulation, or full site compromise when a suitable POP gadget chain exists in the WordPress stack. Reported by Patchstack and tracked as EUVD-2026-37490, with no public exploit identified at time of analysis but a high CVSS score of 8.1 reflecting the severity of unauthenticated deserialization. No KEV listing is present.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Mikado-Themes TechLink WordPress theme (versions up to and including 1.3) allows remote attackers to trigger insecure deserialization of attacker-controlled data. Successful exploitation can lead to full compromise of the underlying WordPress site, including arbitrary code execution, data theft, and site defacement, though the CVSS vector flags high attack complexity (AC:H). No public exploit identified at time of analysis, and the issue is not currently listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Roisin WordPress theme (versions up to and including 1.4) by elated-themes allows remote attackers to deliver crafted serialized payloads to vulnerable deserialization sinks, potentially leading to high-impact compromise of confidentiality, integrity, and availability. The CVSS 8.1 score reflects high attack complexity offset by the lack of any authentication or user interaction. No public exploit was identified at time of analysis, and the issue is tracked by Patchstack and ENISA (EUVD-2026-37488).

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Mikado-Themes Ashtanga WordPress theme (versions ≤ 1.2) allows remote attackers to deliver malicious serialized PHP objects to the application. When combined with a suitable POP (property-oriented programming) gadget chain present in WordPress core, other plugins, or themes, exploitation can lead to remote code execution, arbitrary file operations, or full site compromise. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Mikado-Themes LuxeDrive WordPress theme through version 1.4 allows remote attackers to deliver crafted serialized payloads that, when combined with a suitable POP gadget chain, can lead to remote code execution, data tampering, or service disruption on the underlying WordPress site. No public exploit identified at time of analysis, and the CVSS attack complexity is High because successful exploitation typically depends on the presence of a usable gadget chain in WordPress core, other plugins, or themes installed alongside LuxeDrive. The flaw is tracked by Patchstack and EUVD as EUVD-2026-37486.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Laurits WordPress theme through version 1.5.1 allows remote attackers to deserialize attacker-controlled data, potentially leading to code execution, data tampering, or denial of service when a suitable gadget chain is present in the WordPress stack. The flaw was disclosed via Patchstack and tracked as EUVD-2026-37485; no public exploit identified at time of analysis, though the high CVSS of 8.1 and CWE-502 classification mark it as a serious supply-chain risk for sites running this commercial Edge-Themes product.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

PHP Object Injection in the Micdrop WordPress theme versions 1.3.1 and earlier allows remote unauthenticated attackers to trigger insecure deserialization, potentially leading to high impact on confidentiality, integrity, and availability of the underlying site. No public exploit identified at time of analysis, and the CVSS vector reflects high attack complexity, meaning successful exploitation likely depends on the presence of a usable PHP gadget chain in the site's installed plugins or core. The flaw is tracked as CWE-502 (Deserialization of Untrusted Data) and was reported by Patchstack.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

PHP Object Injection in the Valiance WordPress theme (versions up to and including 1.2) by elated-themes allows attackers to pass attacker-controlled serialized data into a PHP unserialize() sink, enabling object injection that - when paired with a suitable gadget chain from WordPress core or another installed plugin - can lead to remote code execution, file manipulation, or data tampering. The Patchstack advisory labels the issue as unauthenticated, although the published CVSS vector lists PR:H, so the precise authentication boundary should be verified against the vendor advisory. There is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

PHP Object Injection in the Playroom WordPress theme (versions ≤ 1.4.1) by elated-themes allows remote attackers to inject crafted serialized objects that are deserialized by the application, potentially triggering POP-chain gadgets. The vulnerability is described as unauthenticated by Patchstack despite the CVSS vector listing PR:H, and no public exploit identified at time of analysis.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP object injection in the Santé WordPress theme through version 1.5.1 allows remote attackers to deserialize attacker-controlled data and potentially achieve remote code execution, data tampering, or denial of service when a suitable POP gadget chain is present. The flaw is reported by Patchstack and tracked as EUVD-2026-37480; no public exploit identified at time of analysis, and the CVSS 8.1 score reflects high attack complexity offset by network reach and no authentication. The Santé theme is a commercial Select Themes product, so exposure is limited to sites that have installed and activated this specific theme.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the NeoBeat WordPress theme (versions ≤1.7) allows remote attackers to inject crafted serialized objects that, when deserialized by the application, can be chained with available gadgets to compromise the site. No public exploit identified at time of analysis, but the CVSS 8.1 rating reflects high impact across confidentiality, integrity and availability if a usable gadget chain is present in the WordPress core or installed plugins.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Fidalgo WordPress theme (versions ≤1.2.2) allows remote attackers to inject crafted serialized PHP objects that are deserialized by the theme, potentially leading to arbitrary code execution, data tampering, or service disruption depending on available gadget chains. No public exploit identified at time of analysis, but the unauthenticated network vector and CWE-502 classification make this a meaningful risk for WordPress sites running this commercial theme.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the Alloggio - Hotel Booking WordPress theme through version 2.1.2 allows remote attackers to inject crafted serialized objects that, when combined with a suitable gadget chain, can lead to high-impact compromise of the hosting WordPress site. The flaw was reported by Patchstack and is tracked as EUVD-2026-37474; no public exploit identified at time of analysis, and there is no evidence of active exploitation. CVSS 3.1 base score is 8.1 with high attack complexity, reflecting the need for a usable gadget chain in the WordPress environment.

PHP WordPress Deserialization +3
NVD
EPSS 1% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP object injection in the WordPress Elementra theme (versions ≤ 1.0.9) allows remote attackers to deliver crafted serialized payloads that trigger deserialization of untrusted data. With no public exploit identified at time of analysis, the CVSS 9.8 vector still indicates network-reachable, no-auth exploitation against any WordPress site running an affected Elementra build. Successful chaining with a POP gadget in WordPress core or other installed plugins typically yields remote code execution or full site compromise.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH PATCH This Week

Unauthenticated PHP object injection in the Kapee WordPress theme versions prior to 1.7.0 allows remote attackers to inject crafted serialized objects that, when combined with suitable gadget chains, can lead to high-impact compromise of confidentiality, integrity, and availability. The flaw was reported by Patchstack and a vendor patch is available; no public exploit identified at time of analysis, but the unauthenticated network vector makes this a meaningful priority for sites running this commercial WooCommerce theme.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the EmallShop WordPress theme (versions <= 2.4.21) allows remote attackers to inject crafted serialized PHP objects that are deserialized by the application, potentially leading to remote code execution, data tampering, or denial of service when a suitable gadget chain is present. The flaw was disclosed by Patchstack (EUVD-2026-37470) and carries CVSS 8.1 (AV:N/AC:H/PR:N/UI:N) - no public exploit identified at time of analysis and not listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 1% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in BoldThemes Nifty WordPress theme versions 1.4.1 and earlier allows remote attackers to inject arbitrary PHP objects through unsafe deserialization, potentially leading to remote code execution when a suitable gadget chain exists in the WordPress installation. No public exploit identified at time of analysis, but the unauthenticated network-reachable nature combined with CVSS 9.8 makes this a high-priority issue for any site running the affected theme. Reported by Patchstack and tracked as EUVD-2026-37464.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.8
HIGH This Week

PHP Object Injection in the ThemeFusion Avada WordPress theme versions 3.15.3 and earlier allows authenticated users with Contributor-level privileges to trigger unsafe deserialization, potentially leading to remote code execution, data tampering, or service disruption on the underlying WordPress installation. No public exploit identified at time of analysis, but the low attack complexity and widespread deployment of Avada as a commercial WordPress theme make this a meaningful risk for multi-author sites.

PHP WordPress Deserialization +3
NVD VulDB
EPSS 1% CVSS 9.8
CRITICAL Act Now

PHP Object Injection in the ThemeFusion Fusion Builder WordPress plugin (versions ≤ 3.15.4) allows authenticated users with Contributor-level access to inject crafted serialized PHP objects that are deserialized by the plugin. Successful exploitation can lead to property-oriented programming (POP) chain execution depending on classes loaded in the WordPress runtime, with potential outcomes ranging from arbitrary file operations to remote code execution. No public exploit identified at time of analysis and the issue is not on CISA KEV, but the Contributor prerequisite is low in many multi-author WordPress deployments.

PHP WordPress Deserialization +3
NVD VulDB
EPSS 1% CVSS 9.8
CRITICAL Act Now

Remote takeover of Oracle WebLogic Server (versions 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, and 15.1.1.0.0) is possible by unauthenticated attackers with TCP network access to the Core component. Oracle rates this 9.8 with full confidentiality, integrity, and availability impact, and characterizes it as 'easily exploitable,' though no public exploit identified at time of analysis. The flaw is disclosed via the Oracle Critical Patch Update for June 2026 and currently shows no CISA KEV listing or EPSS data.

Deserialization Oracle Weblogic Server +1
NVD VulDB
EPSS 0% CVSS 8.6
HIGH PATCH This Week

Arbitrary OS command execution in Sonatype Nexus Repository 3 versions prior to 3.92.0 allows authenticated users holding the nx-licensing-create privilege to run commands as the Nexus process user by uploading a malicious license file. The flaw is rooted in unsafe deserialization (CWE-502) during license processing. No public exploit identified at time of analysis.

Deserialization Nexus Repository Sonatype
NVD VulDB
EPSS 0% CVSS 7.8
HIGH This Week

Local code execution in NVIDIA NeMo Framework on Linux allows an authenticated low-privileged attacker to abuse unsafe deserialization of untrusted data (CWE-502) to run arbitrary code, escalate privileges, tamper with data, or disclose information. The CVSS 7.8 (AV:L/PR:L) profile and the typical ML-training use case mean exploitation requires existing access to the host running NeMo. No public exploit identified at time of analysis and the CVE is not listed in CISA KEV.

RCE Information Disclosure Deserialization +2
NVD
EPSS 1% CVSS 9.2
CRITICAL POC PATCH Act Now

Unsafe Erlang term deserialization in the elixir-grpc library (versions 0.4.0 through 1.0.0) allows unauthenticated remote attackers to crash the BEAM VM via atom-table exhaustion or achieve remote code execution by sending crafted gRPC payloads with Content-Type application/grpc+erlpack. The flaw lives in GRPC.Codec.Erlpack.decode/2, which calls :erlang.binary_to_term/1 without the :safe option, size bounds, or type guards. No public exploit is identified at time of analysis, but the upstream fix is published at commit 272a97a and a patched 1.0.0 release is available.

RCE Deserialization Grpc +1
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in the OttoKit WordPress plugin (formerly SureTriggers) versions 1.1.27 and earlier allows remote attackers to deserialize attacker-controlled PHP objects against any site running the plugin. With a CVSS 9.8 (AV:N/AC:L/PR:N/UI:N) and a CWE-502 deserialization root cause, successful exploitation can lead to full code execution, data theft, or site takeover when a suitable POP gadget chain is present in WordPress core or another installed plugin. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in the WP Travel Engine WordPress plugin versions 6.7.12 and earlier enables remote attackers to deserialize attacker-controlled data without authentication, leading to full compromise (CVSS 9.8). The CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates trivial network exploitation against any WordPress site running a vulnerable installation. No public exploit identified at time of analysis, but the unauthenticated nature and WordPress plugin ecosystem make this a high-priority patching target for travel-booking sites.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in the wpForo Forum WordPress plugin versions 3.1.0 and earlier allows remote attackers to deliver untrusted serialized payloads that are deserialized by the plugin, leading to potential remote code execution, data tampering, and full site compromise depending on available POP gadget chains. The flaw is reachable without authentication over the network and carries a vendor CVSS of 9.8; no public exploit identified at time of analysis and the issue is not currently on the CISA KEV list.

PHP WordPress Deserialization +3
NVD
EPSS 1% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in the Happyforms WordPress plugin (versions <= 1.26.13) allows remote attackers to deliver attacker-controlled serialized objects that get deserialized by the plugin, potentially leading to remote code execution, file manipulation, or data compromise on the underlying WordPress site. No public exploit identified at time of analysis, but the CVSS 9.8 rating and unauthenticated network attack vector make this a high-priority issue for any site running the plugin. Reported by Patchstack with a corresponding advisory in their WordPress vulnerability database.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in the WordPress plugin 'Integration for Mailchimp and Contact Form 7, WPForms, Elementor, Ninja Forms' (versions <= 1.1.8) allows remote attackers to deserialize attacker-controlled data, potentially leading to remote code execution when a suitable POP (property-oriented programming) gadget chain exists in the WordPress environment. The flaw is reachable without authentication and carries a CVSS 9.8 rating, though no public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV. The plugin is distributed by CRM Perks and was disclosed via Patchstack.

PHP WordPress Deserialization +4
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in the Integration for Contact Form 7 HubSpot WordPress plugin (versions <= 1.3.7) allows remote attackers to inject malicious serialized PHP objects, which can lead to full site compromise when a suitable POP gadget chain exists in WordPress core or co-installed plugins. The flaw is reachable without authentication or user interaction (CVSS 9.8) and was reported by Patchstack. No public exploit identified at time of analysis.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP object injection in the WordPress plugin 'Integration for Salesforce and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms' (versions <= 1.4.3) allows remote attackers to pass attacker-controlled serialized data into PHP's unserialize() function. With a CVSS 9.8 (AV:N/AC:L/PR:N/UI:N) and no authentication required, successful exploitation can lead to arbitrary code execution, data theft, or full site takeover when a suitable POP gadget chain is present. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

PHP WordPress Deserialization +4
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in the WordPress plugin Integration for Contact Form 7 and Constant Contact (versions <= 1.1.6) allows remote attackers to inject crafted serialized PHP objects that get deserialized server-side. When a suitable POP (property-oriented programming) gadget chain is present in WordPress core, another active plugin, or a theme, this can escalate to arbitrary file read/write, deletion, or remote code execution on the host. No public exploit identified at time of analysis, but the CVSS 9.8 rating reflects the unauthenticated network-reachable attack surface.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP Object Injection in the CRM Perks 'WP Zendesk for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms' WordPress plugin (versions 1.1.4 and earlier) allows remote attackers to inject crafted serialized PHP objects into the application, potentially leading to remote code execution, data theft, or site takeover when a suitable POP gadget chain is present. The flaw is reported by Patchstack and carries a 9.8 CVSS score with network-reachable, no-privilege, no-interaction characteristics. No public exploit identified at time of analysis.

PHP WordPress Deserialization +4
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP object injection in the WordPress plugin 'Integration for Keap/Infusionsoft and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms' (versions 1.2.1 and earlier) allows remote attackers to inject crafted serialized objects that can be deserialized by the plugin, potentially leading to full site compromise. No public exploit identified at time of analysis, but the CVSS 9.8 score and unauthenticated network attack vector make this a high priority for any WordPress site running the affected plugin. EPSS and CISA KEV data were not provided in the input, so real-world exploitation prevalence is undetermined.

PHP WordPress Deserialization +4
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Unauthenticated PHP object injection in the WP Insightly for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms WordPress plugin (versions <= 1.1.4) allows remote attackers to deliver crafted serialized payloads that the plugin deserializes without validation. Successful exploitation can lead to remote code execution, data tampering, or full site compromise when a suitable POP (property-oriented programming) gadget chain is available in WordPress core, the active theme, or any installed plugin. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

PHP WordPress Deserialization +4
NVD
EPSS 0% CVSS 8.1
HIGH This Week

Unauthenticated PHP Object Injection in the EventPrime event calendar plugin for WordPress (versions <= 4.3.2.1) allows remote attackers to inject crafted serialized PHP objects that may trigger arbitrary deserialization-driven gadget chains, leading to potential remote code execution, file manipulation, or data tampering. The flaw is reachable without authentication but carries CVSS:3.1 AC:H, indicating non-trivial preconditions for successful exploitation. No public exploit identified at time of analysis, but Patchstack disclosure typically precedes broader exploit development against the WordPress plugin ecosystem.

PHP WordPress Deserialization +2
NVD VulDB
EPSS 0% CVSS 8.8
HIGH This Week

PHP Object Injection in the Events Calendar for GeoDirectory WordPress plugin (versions <= 2.3.25) allows authenticated users with Contributor-level privileges to trigger unsafe deserialization, potentially leading to remote code execution, data tampering, or denial of service on the host WordPress site. The flaw is tracked as CWE-502 and was disclosed via Patchstack with a CVSS 3.1 score of 8.8, but no public exploit identified at time of analysis. Patchstack reports the issue and no vendor-released patch identified at time of analysis based on the supplied data.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 7.2
HIGH This Week

PHP Object Injection in the Advanced Product Fields (Product Addons) for WooCommerce plugin versions 1.6.19 and below allows authenticated users with Shop Manager privileges to deserialize attacker-controlled data, potentially leading to remote code execution or full site compromise depending on available PHP gadget chains. The flaw was disclosed by Patchstack and tracked as EUVD-2026-36946; no public exploit identified at time of analysis and the issue is not in CISA KEV.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 7.2
HIGH This Week

PHP Object Injection in the YayMail WordPress plugin (versions ≤ 4.3.3) allows authenticated users with Shop Manager privileges to inject crafted serialized PHP objects and trigger deserialization on the server. Successful exploitation can lead to high-impact compromise of confidentiality, integrity, and availability of the WordPress site, though no public exploit identified at time of analysis. The flaw is reported by Patchstack and tracked as EUVD-2026-36945.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 7.2
HIGH This Week

PHP Object Injection in the Modula Image Gallery WordPress plugin (versions ≤ 2.14.18) allows authenticated authors to trigger unsafe deserialization of attacker-controlled input, potentially leading to remote code execution, data tampering, or denial of service depending on available POP gadget chains in the WordPress environment. The flaw was disclosed by Patchstack and tracked as ENISA EUVD-2026-36940; no public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 8.8
HIGH This Week

Authenticated PHP object injection in the WordPress 'Anti-Malware Security and Brute-Force Firewall' (GOTMLS) plugin through version 4.23.87 allows contributor-level users to inject crafted serialized PHP objects that are deserialized by the plugin. Successful exploitation can pivot through existing PHP gadget chains in WordPress or other installed plugins to achieve high-impact compromise of the site. No public exploit identified at time of analysis, and the issue is not on the CISA KEV list.

PHP WordPress Deserialization +2
NVD
EPSS 0% CVSS 8.8
HIGH This Week

PHP Object Injection in the Post Duplicator WordPress plugin versions <= 3.0.10 allows authenticated users with Contributor-level privileges to trigger insecure deserialization, potentially leading to remote code execution, data tampering, or full site compromise. The flaw is rated CVSS 8.8 (High) and was disclosed by Patchstack. No public exploit identified at time of analysis and the vulnerability is not currently listed in CISA KEV.

PHP WordPress Deserialization +3
NVD
EPSS 0% CVSS 7.2
HIGH PATCH This Week

PHP Object Injection in the WooCommerce PDF Invoices & Packing Slips WordPress plugin before version 5.9.0 allows authenticated users with Shop Manager privileges to trigger unsafe deserialization, potentially leading to full compromise of confidentiality, integrity, and availability. The flaw was reported by Patchstack and a vendor patch is available, though no public exploit has been identified at time of analysis. The CVSS 7.2 score reflects high privilege requirements offset by network reach and severe impact.

PHP WordPress Deserialization +2
NVD
Prev Page 6 of 35 Next

Quick Facts

Typical Severity
CRITICAL
Category
web
Total CVEs
3138

Related CWEs

MITRE ATT&CK

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy