GHSA-3v3g-3pf9-fgcfHighCVSS 7.5
Cotonti 1.0.0 passes the base64-decoded cb parameter to unserialize() without allowed_classes...
🔗 CVE IDs covered (1)
📋 Description
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 (8)
- https://nvd.nist.gov/vuln/detail/CVE-2026-93872
- https://github.com/Cotonti/Cotonti/issues/1894
- https://github.com/Cotonti/Cotonti/pull/1897
- https://github.com/Cotonti/Cotonti
- https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/comments/controllers/actions/EditAction.php
- https://github.com/Cotonti/Cotonti/blob/1.0.0/system/cache.php
- https://www.vulncheck.com/advisories/cotonti-1.0.0-php-object-injection-via-comments-plugin-edit-action-cb-parameter
- https://github.com/advisories/GHSA-3v3g-3pf9-fgcf