CMSimple 5.4 contains an authenticated remote code execution vulnerability that allows logged-in attackers to inject malicious PHP code into template files. Attackers can exploit the template editing functionality by crafting a reverse shell payload and saving it through the template editing endpoint with a valid CSRF token.
History

Tue, 23 Dec 2025 19:45:00 +0000

Type Values Removed Values Added
Description CMSimple 5.4 contains an authenticated remote code execution vulnerability that allows logged-in attackers to inject malicious PHP code into template files. Attackers can exploit the template editing functionality by crafting a reverse shell payload and saving it through the template editing endpoint with a valid CSRF token.
Title CMSimple 5.4 Authenticated Remote Code Execution via Template Editing
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2025-12-23T21:20:25.731Z

Reserved: 2025-12-23T13:24:04.579Z

Link: CVE-2021-47735

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-12-23T20:15:45.277

Modified: 2025-12-23T20:15:45.277

Link: CVE-2021-47735

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.