CVE-2026-71294

7.6 HIGHpublic exploit available

Published 2026-08-05 · Updated 2026-08-10

AI risk analysis

Summary: The flaw allows deserialization of untrusted data, leading to potential code execution or data manipulation by authenticated users.
Exploitability: Exploitation requires write access to comments and basic parameter injection; moderately easy given typical CMS configurations.
Blast radius: If exploited, could lead to full compromise of the application, including unauthorized data modification or theft.
Prioritized remediation: Restrict allowed classes during deserialization in CreateAction.php and update comments.setup.php to limit write access.

rcedeserializationwebauth-required

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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).

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Weaknesses

CWE-502

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.