CVE-2026-71294
Cotonti CMS Comments Plugin PHP Object Injection via Unrestricted unserialize() in Create/Edit Actions
- State
- Published
- Severity
- 7.7 High
- Published
- Aug 5, 2026
- Updated
- Aug 10, 2026
- Reserved
- Aug 5, 2026
Description
Cotonti CMS's Comments plugin deserializes user-supplied data without restricting the classes that may be instantiated. In plugins/comments/controllers/actions/CreateAction.php, a POST parameter obtained via (trim-only sanitization) is passed to with no restriction, reachable by any member with write access to comments (the default setting in plugins/comments/comments.setup.php).
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.7 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L | TuranSec |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
CotontiCotonti |
|
References
- https://github.com/Cotonti/Cotontithird-party-advisory
- https://github.com/Cotonti/Cotonti/blob/master/plugins/comments/controllers/actions/CreateAction.phpthird-party-advisory
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