CVE-2021-47734

CMSimple 5.4 contains an authenticated local file inclusion vulnerability that allows remote attackers to manipulate PHP session files and execute arbitrary code. Attackers can leverage the vulnerability by changing the functions file path and uploading malicious PHP code through session file upload mechanisms.

Score

CVSS 4.0 8.6 High

Status

Modified - disclosure@vulncheck.com

Published

2025-12-23

Last modified

2026-03-17

Weaknesses

CWE-98

Affected products

• Cmsimple (Cmsimple)

References

• https://www.cmsimple.org/en/
• https://www.exploit-db.com/exploits/50547
• https://www.vulncheck.com/advisories/cmsimple-authenticated-local-file-inclusion-remote-code-execution