What is GHSA-c4f8-v76x-mwx3?

GHSA-c4f8-v76x-mwx3 is a security advisory published by GitHub Security Advisories with Critical severity. phpMyFAQ before v4.1.6 contains a remote code execution vulnerability in the configuration API...

Which CVE IDs does GHSA-c4f8-v76x-mwx3 cover?

GHSA-c4f8-v76x-mwx3 covers the following CVE IDs: CVE-2026-66398. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-c4f8-v76x-mwx3Critical

phpMyFAQ before v4.1.6 contains a remote code execution vulnerability in the configuration API...

Vendor

GitHub Security Advisories

Published

July 27, 2026

Last Modified

July 27, 2026

🔗 CVE IDs covered (1)

CVE-2026-66398 →

📋 Description

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.

🔗 References (4)

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-4fv7-8rr6-rf2w
https://nvd.nist.gov/vuln/detail/CVE-2026-66398
https://www.vulncheck.com/advisories/phpmyfaq-before-remote-code-execution-via-configuration-api
https://github.com/advisories/GHSA-c4f8-v76x-mwx3