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.

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History

Wed, 31 Dec 2025 21:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:cmsimple:cmsimple:5.4:*:*:*:*:*:*:*

Wed, 24 Dec 2025 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Cmsimple
Cmsimple cmsimple
Vendors & Products Cmsimple
Cmsimple cmsimple

Tue, 23 Dec 2025 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


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'}


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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

Updated: 2025-12-23T21:20:22.956Z

cve-icon NVD

Status : Analyzed

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

Modified: 2025-12-31T21:43:13.570

Link: CVE-2021-47735

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-24T11:53:21Z

Weaknesses