high7.5
CVE-2026-93872
Cotonti 1.0.0 passes the base64-decoded cb parameter to unserialize() without allowed_classes restriction in the comments plugin EditAction.
Impact
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.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
Weakness classification
References
- NVD record
- CVE.org record
- 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://github.com/Cotonti/Cotonti/issues/1894
- https://github.com/Cotonti/Cotonti/pull/1897
- https://www.vulncheck.com/advisories/cotonti-1.0.0-php-object-injection-via-comments-plugin-edit-action-cb-parameter