PT-2026-64999 · Thorsten · Phpmyfaq

Imduong · CVE-2026-66398 · Published 2026-07-27 · Updated 2026-07-27

Mitre

CVSS v4.0

9.4

Critical

Base vector

AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

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.

Exploit

Fix

Weakness Enumeration

CWE-494

Related Identifiers

CVE-2026-66398

Affected Products

Phpmyfaq

References · 3

• 🔥 https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-4fv7-8rr6-rf2w · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-66398 · Security Note
• https://vulncheck.com/advisories/phpmyfaq-before-remote-code-execution-via-configuration-api · Note