Vulnerability Description
Cotonti through 1.0.0 contains an open redirect vulnerability in the cot_url_check() function that validates redirect destinations using a regular expression lacking an end-of-string anchor. Attackers can bypass the redirect guard by supplying hostnames beginning with the site domain to redirect users to attacker-controlled hosts through the ratings plugin or other redirect callers.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/Cotonti/Cotonti
- https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/ratings/ratings.ajax.php
- https://github.com/Cotonti/Cotonti/blob/1.0.0/system/functions.php
- https://github.com/Cotonti/Cotonti/issues/1891
- https://github.com/Cotonti/Cotonti/pull/1899
- https://www.vulncheck.com/advisories/cotonti-through-1.0.0-open-redirect-via-una
FAQ
What is CVE-2026-93869?
CVE-2026-93869 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Cotonti through 1.0.0 contains an open redirect vulnerability in the cot_url_check() function that validates redirect destinations using a regular expression lacking an end-of-string anchor. Attackers...
How severe is CVE-2026-93869?
CVE-2026-93869 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-93869?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.