Vulnerability Description
FlaskBB through 2.2.0, fixed in commit a5da9a5, contains a logic flaw vulnerability that allows authenticated administrators to delete all built-in authorization groups by exploiting a type mismatch in the bulk delete protection check. The bulk AJAX endpoint in the management views compares received JSON integer group IDs against string literals, causing the protection check to always pass, which allows deletion of all six built-in groups and destroys the forum's permission model, potentially rendering the site unusable.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/flaskbb/flaskbb/commit/a5da9a529adddc65fe31e275192b642a4e32de
- https://github.com/flaskbb/flaskbb/security/advisories/GHSA-r9cf-jxr6-5h3r
- https://www.vulncheck.com/advisories/flaskbb-logic-flaw-authorization-group-dele
- https://github.com/flaskbb/flaskbb/security/advisories/GHSA-r9cf-jxr6-5h3r
FAQ
What is CVE-2026-22660?
CVE-2026-22660 is a vulnerability with a CVSS score of 7.2 (HIGH). FlaskBB through 2.2.0, fixed in commit a5da9a5, contains a logic flaw vulnerability that allows authenticated administrators to delete all built-in authorization groups by exploiting a type mismatch i...
How severe is CVE-2026-22660?
CVE-2026-22660 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22660?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.