cvedb.io
CVE-2026-4139
MEDIUM · CVSS 4.3
EPSS exploitation probability: 0%
Published 2026-04-22T09:16:24.707 · Last modified 2026-06-17T10:56:03.013

Summary

The mCatFilter plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 0.5.2. This is due to the complete absence of nonce verification and capability checks in the compute_post() function, which processes settings updates. The compute_post() function is called in the plugin constructor on every page load via the plugins_loaded hook, and it directly processes $_POST data to modify plugin settings via update_option() without any CSRF token validation. This makes it possible for unauthenticated attackers to modify all plugin settings, including category exclusion rules, feed exclusion flags, and tag page exclusion flags, via a forged POST request, granted they can trick a site administrator into performing an action such as clicking a link.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.