EUVD-2026-90220
GHSA-vvmp-qqcf-xwvf
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Contributor account required so PR:L not PR:N; AC:H because exploitation to code execution depends on a suitable POP/gadget chain being present; network vector, high CIA if chained.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Contributor PHP Object Injection in Nested Pages <= 3.3.2 versions.
AnalysisAI
PHP object injection in the WordPress plugin Nested Pages (wp-nested-pages, by Hook & Filter) in versions up to and including 3.3.2 lets an attacker who holds at least a Contributor-level account on the affected site submit crafted serialized data that is passed to PHP's unserialization logic, which can lead to arbitrary object instantiation and, where a usable POP gadget chain exists, to code execution, data theft, or full site compromise. The reported base score of 9.8 (AV:N/AC:L/PR:N/UI:N) is inconsistent with the vendor's own 'Contributor PHP Object Injection' designation; the authoritative assessment re-scores the issue as AV:N/AC:H/PR:L/UI:N, reflecting that a low-privileged authenticated WordPress account is a hard prerequisite and that RCE depends on gadget availability rather than being guaranteed. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated WordPress account with at least Contributor role on a site running the Nested Pages plugin version 3.3.2 or earlier - the vulnerability title explicitly designates it a 'Contributor' PHP Object Injection, contradicting the input vector's PR:N. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N, base 9.8) directly conflicts with the vulnerability title, which explicitly names it a 'Contributor PHP Object Injection.' Patchstack's own naming convention indicates exploitation requires an authenticated account holding at least the WordPress Contributor role, which is PR:L, not the PR:N encoded in the vector - the CVSS vector appears to overstate the attack by omitting the privilege requirement, a common artifact of automated 9.8 assignments for CWE-502. … 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 or exact fixed version is identified in the available data; the affected range extends through 3.3.2, so the first action is to check the plugin's update channel and the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/wp-nested-pages/vulnerability/wordpress-nested-pages-plugin-3-3-2-php-object-injection-vulnerability?_s_id=cve) for a release above 3.3.2 and apply it as soon as it exists. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all WordPress sites running Nested Pages (wp-nested-pages) at versions up to and including 3.3.2, temporarily deactivate or remove the plugin where business operations permit, and restrict or audit all Contributor-level and higher accounts to ensure only trusted users can authenticate. …
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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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