CVE-2026-71294CWE-502insecure-deserialization

CVE-2026-71294

High · published August 5, 2026

CVSS v3.1
7.6
EPSS
0%
Percentile
30.7
In the wild
Unconfirmed
What it is

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).

The record
Technical detail
CVSS v3.1
7.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00379 · 30.7th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-08-05T17:24Z
References (2)
https://github.com/Cotonti/Cotonti · 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2chttps://github.com/Cotonti/Cotonti/blob/master/plugins/comments/controllers/actions/CreateAction.php · 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
EPSS history
Timeline
  • 05 AUG 12:38Z
    Cotonti CMS Comments Plugin PHP Object Injection via Unrestricted unserialize() in Create/Edit Actions
    cvelistv5