EUVD-2026-92752
GHSA-29vv-gx7g-vm7g
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Network-reachable admin-only endpoint drives AV:N/AC:L/PR:H/UI:N; object injection enabling code execution yields full C:H/I:H/A:H with unchanged scope.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Deserialization of Untrusted Data vulnerability in WP Spell Check WP Spell Check wp-spell-check allows Object Injection.This issue affects WP Spell Check: from n/a through 12.1.
Articles & Coverage 1
AnalysisAI
PHP object injection in the WP Spell Check WordPress plugin, affecting all versions up to and including 12.1, allows an attacker who already holds administrator-level privileges to pass attacker-controlled data into PHP's deserialization routine and instantiate arbitrary objects. Successful object injection can lead to high-integrity and high-confidentiality impact - including code execution, file manipulation, or privilege abuse - depending on whether a usable POP gadget chain exists in the plugin or the surrounding WordPress environment, which the available data does not confirm. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated user with administrator-level privileges (CVSS PR:H) who can reach the WP Spell Check endpoint that deserializes attacker-controlled input; affects all versions of WP Spell Check up to and including 12.1. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a PHP Object Injection flaw (CWE-502) in the WP Spell Check WordPress plugin, rated CVSS 7.2 (High). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch identified at time of analysis: the only reference supplied is the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/wp-spell-check/vulnerability/wordpress-wp-spell-check-plugin-12-1-php-object-injection-vulnerability?_s_id=cve) and it names no fixed version, so check that page periodically and upgrade to the first patched release as soon as one is published. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, confirm whether WP Spell Check versions up to and including 12.1 are installed anywhere in the estate and, where business operations allow, deactivate and remove the plugin; where removal is not immediately feasible, enforce least privilege by auditing and minimizing the number of WordPress administrator accounts, rotate all administrative credentials and salts, and require multi-factor authentication for every admin login. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
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