VULNERABILITY INTELLIGENCE

CVE-2021-47734

CVSS score7.8 HIGH
EPSS probability0.78%
CISA KEVNot currently listed
Published2025-12-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-98

Primary references