CSRF in Cotonti
CVE-2026-93870
Cotonti through 1.0.0 fails to validate anti-CSRF tokens in the ratings plugin AJAX handler, allowing attackers to forge ratings on behalf of authenticated users. Attackers can craft malicious pages that auto-submit POST requests to modify stored rating data when visited by logged-in users.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (8.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/Cotonti/Cotonti/issues/1892 (issue-tracking)
- github.com/Cotonti/Cotonti/pull/1900 (issue-tracking, patch)
- github.com/Cotonti/Cotonti/blob/1.0.0/plugins/ratings/ratings.ajax.php (technical-description)
- github.com/Cotonti/Cotonti (product)
- www.vulncheck.com/advisories/cotonti-through-1.0.0-cross-site-request-forgery-i… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-93870?
- CVE-2026-93870 is a medium-severity vulnerability in Cotonti, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-09-18.
- How severe is CVE-2026-93870?
- Medium severity. CVSS v3 base score is 4.3 out of 10.