CVE-2026-0690
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Lifecycle Timeline
2Description
The FlatPM - Ad Manager, AdSense and Custom Code plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rank_math_description' custom field in all versions up to, and including, 3.2.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Analysis
Stored cross-site scripting in FlatPM - Ad Manager plugin for WordPress up to version 3.2.2 allows authenticated contributors and higher-privileged users to inject malicious scripts through the rank_math_description field due to inadequate input sanitization. The injected scripts execute in the browsers of users viewing affected pages, potentially enabling credential theft, session hijacking, or other client-side attacks. …
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Remediation
Within 30 days: Identify affected systems running all and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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External POC / Exploit Code
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