CVE-2026-28495
CRITICALGetSimple CMS < 3.3.22 - Unauthenticated Remote Code Execution via CSRF in gsconfig Editor
Title source: llmDescription
GetSimple CMS is a content management system. The massiveAdmin plugin (v6.0.3) bundled with GetSimpleCMS-CE v3.3.22 allows an authenticated administrator to overwrite the gsconfig.php configuration file with arbitrary PHP code via the gsconfig editor module. The form lacks CSRF protection, enabling a remote unauthenticated attacker to exploit this via Cross-Site Request Forgery against a logged-in admin, achieving Remote Code Execution (RCE) on the web server.
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-92wv-q2jp-qg88
Scores
CVSS v3
9.6
EPSS
0.0029
EPSS Percentile
21.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-352
Status
published
Products (1)
getsimple-ce/getsimple_cms
< 3.3.22
Published
Mar 10, 2026
Tracked Since
Mar 11, 2026