CVE-2026-66398
Published:July 27, 2026
Updated:August 04, 2026
phpMyFAQ before v4.1.6 contains a remote code execution vulnerability in the configuration API that allows authenticated administrators with CONFIGURATION_EDIT and ATTACHMENT_ADD privileges to write arbitrary PHP files by manipulating the upgrade.lastDownloadedPackage setting. Attackers can upload a malicious ZIP file as an attachment, point the updater configuration to its stored path, and extract it into the application root to achieve code execution as the web server user.
Affected Packages
https://github.com/thorsten/phpMyFAQ.git (GITHUB):
Affected version(s) >=development-nightly-2023-07-02 <4.1.6Fix Suggestion:
Update to version 4.1.6thorsten/phpmyfaq (PHP):
Affected version(s) >=dev-add-claude-github-actions-1771752359307 <4.1.6Fix Suggestion:
Update to version 4.1.6Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Download of Code Without Integrity Check
EPSS
Base Score:
0.24