EUVD-2026-112977
GHSA-wvwq-3hfx-hxpq
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessReach vulnerable EmojiNation endpoint
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DeliverySubmit crafted serialized object payload
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ExploitTrigger PHP deserialization (CWE-502)
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ExecutionInstantiate malicious object via gadget chain
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ImpactAchieve code execution or data compromise
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 | Exploitation requires a running instance of the EmojiNation WordPress theme (ThemeRex) at version 1.0.12 or earlier with a reachable endpoint that deserializes attacker-supplied input; the CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no authentication and no user interaction against a network-facing site. The practical limiting factor for CWE-502 object injection is the presence of an exploitable PHP gadget chain in the theme, active plugins, or WordPress core - if no usable chain is loaded, impact may be reduced to a crash or be non-exploitable. The specific vulnerable parameter/feature and the trigger are not described in the available sources. |
| Impact | Signals are largely aligned toward high priority but rest on a single source. The supplied CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H, score 9.8) describes a network-reachable, low-complexity, unauthenticated flaw with full confidentiality, integrity and availability impact - consistent with CWE-502 PHP Object Injection, where a viable gadget chain can lead to code execution or data compromise. The vuln.today decision label is act_now, reinforcing urgency. However, key exploitation-probability signals are MISSING: no EPSS score is provided and there is no CISA KEV listing, so there is no quantitative or confirmed-exploitation evidence here. The only reference is a Patchstack advisory entry, not a verified working exploit, so this is no public exploit identified at time of analysis. The real risk ceiling of PHP object injection depends on whether an exploitable gadget chain is reachable in the theme or its loaded dependencies - the description does not state this. Net: treat as high priority on CVSS plus act_now, but note the risk is inferred from a single researcher advisory with no EPSS, no KEV, and no confirmed PoC. |
| Exploit ScenarioDerived | A remote, unauthenticated attacker submits crafted serialized PHP data to an EmojiNation entry point that deserializes untrusted input, instantiating attacker-controlled objects. If a usable gadget chain exists in the theme or loaded plugins/core, this can escalate to data disclosure, file manipulation, or remote code execution on the WordPress host. No authentication or user interaction is required per the CVSS vector, though the exact triggering parameter is not described in the available sources. |
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Alert meAnalysisAIv1 – Oct 29, 2026
Unauthenticated PHP object injection in the ThemeRex EmojiNation WordPress theme through version 1.0.12 allows remote attackers to pass crafted serialized input into a reachable theme endpoint, scored 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) and rated act_now by vuln.today priority. Success depends on whether an exploitable PHP gadget chain is loaded via the theme, an active plugin, or WordPress core; without a usable chain the practical result may be limited to a crash or be non-exploitable, and the vulnerable parameter and trigger are not described in the available sources. No public exploit code and no CISA KEV entry are associated with this CVE at time of analysis, and the reporting rests on a single source (Patchstack).
RemediationAI
No fixed version is stated in the available data, so the exact patched release must be confirmed from the Patchstack advisory (https://patchstack.com/database/wordpress/theme/emojination/vulnerability/wordpress-emojination-theme-1-0-12-php-object-injection-vulnerability) before an upgrade target can be named; the CVE record covers EmojiNation through 1.0.12 only. No workaround or configuration-level mitigation is documented in the available sources, and because the vulnerable parameter and endpoint are not identified, targeted request filtering or WAF rules cannot be derived from this intelligence. Until a patched release is confirmed, the concrete exposure-reduction option is to deactivate and remove the EmojiNation theme directory from the affected installation, accepting the loss of the theme's presentation and any theme-specific templates or settings, and to keep it off all sites until a fix is available. Because exploitability depends on a gadget chain supplied by other loaded components, reviewing active plugins for known unserialize gadgets is a useful secondary check, though it does not remove the vulnerable code path itself.
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
The flaw is CWE-502, deserialization of untrusted data, in a PHP-based WordPress theme: attacker-supplied serialized data reaching an unserialize() path can instantiate arbitrary objects, and if those objects expose useful magic methods (__wakeup, __destruct, __toString) within a loaded gadget chain, the attacker may pivot to file operations, SQL execution, or code execution depending on the classes available. The CVSS vector confirms a network-facing, low-complexity, unauthenticated attack with no user interaction and high confidentiality, integrity and availability impact, but severity metrics do not establish the trigger mechanism, which the available sources leave unspecified. The CPE cpe:2.3:a:themerex:emojination:*:*:*:*:*:*:*:* uses a wildcard version, so the recorded affected range is defined only by the advisory's '1.0.12 and earlier' wording rather than by enumerated versions. The limiting factor is environmental: WordPress themes rarely ship a self-sufficient chain, so exploitability in practice hinges on which plugins and core classes are loaded on the target site.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated network deserialization (PR:N, AV:N, AC:L, UI:N); C/I/A:H reflects object-injection RCE potential, though realized impact depends on an available gadget chain not described in sources.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
DescriptionCVE.org
Unauthenticated PHP Object Injection in EmojiNation <= 1.0.12 versions.
Executive ViewAI
A critical vulnerability in the ThemeRex EmojiNation WordPress theme (up to version 1.0.12) enables unauthenticated attackers to inject malicious PHP objects, potentially leading to full site compromise. Given the theme's likely use across multiple marketing or content sites, this could result in data theft, defacement, or service disruption, impacting customer trust and brand reputation.
No vendor-released patch identified at time of analysis. Interim mitigations include disabling the theme, deploying WAF rules to filter malicious serialized payloads, and restricting access to vulnerable endpoints.
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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