EUVD-2026-112974
GHSA-fm4r-fpc8-3m2w
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessReach WordPress site with Bonbon theme
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DeliverySend request with crafted serialized object
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ExploitTrigger unsafe PHP deserialization
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ExecutionGadget chain executes during object lifecycle
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ImpactCompromise site data or code execution
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A08:2025 - Software or Data Integrity Failures
ASVS 5.0
V1 - Encoding and Sanitization Safe deserialization, type allowlists
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | The affected software - the ThemeRex Bonbon WordPress theme at version 1.11 or earlier - must be installed and active on the site; the vector (AV:N/AC:L/PR:N/UI:N) indicates exploitation is remote and pre-authentication against such an installation with no user interaction. The concrete limiting factor for PHP Object Injection is that reaching meaningful impact typically requires a usable gadget chain present in the theme, WordPress core, or a co-installed plugin; the exact deserialization entry point and whether a working gadget chain is public are not described in the available sources. No fixed version is stated in the provided data, so remediation status (update vs. mitigation) cannot be confirmed from the input. |
| Impact | The signals mostly point in one direction but are thin. The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H = 9.8) describes a remotely reachable, low-complexity, pre-authentication flaw with full confidentiality, integrity and availability impact, and the vuln.today Decision label is act_now, which argues for prompt remediation. However, this is a high-CVSS score whose REAL-WORLD severity hinges on data not supplied: there is no EPSS probability, no CISA KEV listing, and no verified working exploit in the input - only a single Patchstack advisory reference. PHP Object Injection (CWE-502) is 'critical only if a usable gadget chain exists' in the theme, WordPress core, or co-installed plugins, and the available sources do not describe the trigger or any confirmed gadget chain, so the H/H/H impact is the advisory's worst-case rating rather than a demonstrated outcome. Net: treat as a genuine priority for sites running the affected theme because it is unauthenticated and network-reachable per the vector, but note that absence of EPSS/KEV/PoC data means widespread active exploitation is not evidenced - this currently reads as a credible vendor-reported bug awaiting exploitation telemetry. |
| Exploit ScenarioDerived | A remote attacker sends a crafted request to a WordPress site running the Bonbon theme (<= 1.11) carrying a malicious serialized PHP object to an endpoint that deserializes untrusted input, without needing credentials (PR:N) or user interaction (UI:N). If a suitable property-oriented-programming gadget chain is available in the theme, WordPress core, or an installed plugin, the injected object can be leveraged for impact up to code execution or data compromise. No verified public exploit code is identified in the provided data, and the exact deserialization sink is not described in the available sources. |
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Alert meAnalysisAIv1 – Oct 29, 2026
PHP object injection in the ThemeRex Bonbon WordPress theme through version 1.11 is reachable without authentication or user interaction, and the supplied CVSS 3.1 vector rates it 9.8 with high confidentiality, integrity, and availability impact. The practical impact depends on a usable gadget chain in the theme, WordPress core, or a co-installed plugin; the deserialization entry point and whether a working gadget chain is publicly available are not described in the available sources. No public exploit was identified in the supplied data at time of analysis, no fixed version is stated, and the vuln.today decision label is act_now.
RemediationAI
The vuln.today priority is act_now, but no vendor-released patch or fixed version is identified in the provided data, so updating cannot be confirmed as the remediation at this time; check the Patchstack advisory at https://patchstack.com/database/wordpress/theme/bonbon/vulnerability/wordpress-bonbon-theme-1-11-php-object-injection-vulnerability?_s_id=cve for an updated release. Until a fix is published, switch the site to a different maintained theme and remove the Bonbon theme files from wp-content/themes so the vulnerable code is no longer present; the trade-off is loss of Bonbon-specific layout and features and possible breakage of content tied to the theme. If removal is not operationally possible, use virtual patching at the web application firewall to block requests to the Bonbon theme directory that carry serialized-object payloads; this is incomplete because the specific vulnerable entry point is not described, and it can cause false positives for legitimate serialized data.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
CWE-502 is the deserialization-of-untrusted-data class. In PHP, exploitation of this class involves crafted serialized data being processed by an object-instantiation path such as unserialize(), with impact depending on magic methods and available gadget chains. The CPE cpe:2.3:a:themerex:bonbon:*:*:*:*:*:*:*:* identifies ThemeRex Bonbon, and the CVE description bounds affected releases at 1.11 and earlier. The supplied CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) describes remote, low-complexity, unauthenticated, no-user-interaction exploitation with high confidentiality, integrity, and availability impact, but the specific parameter, hook, or code path that performs deserialization is not described in the available sources. The independent assessment adds that meaningful impact typically requires a usable gadget chain present in the theme, WordPress core, or a co-installed plugin, and whether such a chain is public is not described.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Advisory describes unauthenticated (PR:N) network-reachable (AV:N) object injection with no user interaction; impact rated high across C/I/A as worst-case for deserialization, though the gadget chain is unconfirmed.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
DescriptionCVE.org
Unauthenticated PHP Object Injection in Bonbon <= 1.11 versions.
Executive ViewAI
CVE-2026-62011 is a critical PHP object injection vulnerability in the ThemeRex Bonbon WordPress theme (version 1.11 and earlier) that can be exploited without authentication. If a usable gadget chain exists in the theme, WordPress core, or co-installed plugins, this could lead to full site compromise, affecting the organization's web presence and potentially exposing sensitive data or enabling further attacks.
No vendor-released patch identified at time of analysis. Interim mitigations include: disabling or removing the vulnerable theme if not business-critical; implementing virtual patching via a WAF to block malicious object injection payloads; restricting access to the WordPress admin panel and login page; monitoring for unusual file changes or outbound connections; and conducting regular security scans to detect exploitation attempts.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
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.
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