HIGH 7.7 NVD
CVE-2026-93872
Cotonti 1.0.0 passes the base64-decoded cb parameter to unserialize() without allowed_classes restriction in the comments plugin EditAction. Registered users wi
Cotonti 1.0.0 passes the base64-decoded cb parameter to unserialize() without allowed_classes restriction in the comments plugin EditAction. Registered users with comment write permissions can instantiate arbitrary PHP objects and potentially achieve file write or code execution through gadget chains.
References
- https://github.com/Cotonti/Cotonti
- https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/comments/controllers/actions/EditAct
- https://github.com/Cotonti/Cotonti/blob/1.0.0/system/cache.php
- https://github.com/Cotonti/Cotonti/issues/1894
- https://github.com/Cotonti/Cotonti/pull/1897
This high severity vulnerability with a CVSS score of 7.7 was published on 2026-09-18 via NVD.
vulnfeed aggregates 14357 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.