CVE-2026-66398: critical vulnerability in thorsten phpMyFAQ
phpMyFAQ before 4.1.6 Remote Code Execution via Configuration API
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.4epss 0.4%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
thorsten · phpMyFAQRelated CVEs — thorsten phpMyFAQ
In the same product, most dangerous first.
CVE-2024-55889MEDIUMphpMyFAQ Vulnerable to Unintended File Download Triggered by Embedded FramesEPSS 2.2%CVE-2025-69200HIGHphpMyFAQ has unauthenticated config backup download via /api/setup/backupEPSS 2.1%CVE-2026-24421MEDIUMphpMyFAQ missing authorization exposes /api/setup/backup to any authenticated userEPSS 1.7%CVE-2024-28105HIGHphpMyFAQ's File Upload Bypass at Category Image Leads to RCEEPSS 1.5%CVE-2024-27299HIGHphpMyFAQ SQL Injection at "Save News"EPSS 1.2%CVE-2024-28107HIGHphpMyFAQ SQL injections at insertentry & saveentryEPSS 1.0%