CSRF in Chsxf Mcatfilter

CVE-2026-4139

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, whic…

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.000 (0.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-4139?
CVE-2026-4139 is a medium-severity vulnerability in Chsxf Mcatfilter, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-04-22.
How severe is CVE-2026-4139?
Medium severity. CVSS v3 base score is 4.3 out of 10.