EUVD-2026-14005
GHSA-qgp7-6qw9-gvc2
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Lifecycle Timeline
3Description
The Post Flagger plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'flag' shortcode in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping on user supplied attributes. 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
A Stored Cross-Site Scripting (XSS) vulnerability exists in the Post Flagger WordPress plugin for all versions up to and including 1.1, caused by insufficient input sanitization and output escaping in the 'flag' shortcode's user-supplied attributes. Authenticated attackers with contributor-level access or higher can inject arbitrary JavaScript code into pages, which executes for all users who view those pages. …
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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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