What is CVE-2026-93873?

CVE-2026-93873 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-2026-93873?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CSRF in Cotonti

CVE-2026-93873

Cotonti through 1.0.0 fails to validate anti-CSRF tokens in the contact plugin submission handler, allowing attackers to forge messages. Attackers can auto-submit contact forms from attacker-controlled pages to send forged messages attributed to authenticated victims to the administrator inbox.

Vulnerability class: CSRF (Cross-Site Request Forgery)

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

Cotonti

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (issue-tracking, patch)
disclosure@vulncheck.com (technical-description)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-93873?: CVE-2026-93873 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-2026-93873?: Medium severity. CVSS v3 base score is 4.3 out of 10.