PT-2025-52834 · Cmsimple · Cmsimple

S1Lv3R · Published 2025-12-23 · Updated 2025-12-23 · CVE-2021-47734

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions CMSimple version 5.4

Description CMSimple version 5.4 contains a flaw that allows attackers to manipulate PHP session files and potentially execute arbitrary code. This is possible through an authenticated local file inclusion, where attackers can change the functions file path and upload malicious PHP code via session file upload mechanisms.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-98

Related Identifiers

CVE-2021-47734

Affected Products

Cmsimple

References · 6

• 🔥 https://exploit-db.com/exploits/50547 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47734 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47734 · Vendor Advisory
• https://vulncheck.com/advisories/cmsimple-authenticated-local-file-inclusion-remote-code-execution · Note
• https://twitter.com/CVEnew/status/2003567286028808280 · Twitter Post
• https://cmsimple.org/en · Note