Auth bypass in Phpmyfaq
CVE-2026-75919
phpMyFAQ before 4.1.7 contains an authentication bypass vulnerability in SetupController that allows unauthenticated attackers to run database migrations and create configuration backups when maintenance mode is enabled. Attackers can call POST /api/setup/update-database and POST /api/setup/backup endpoints to execute database updates, disable maintenance mode, and extract database credentials from generated ZIP archives.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (44.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/thorsten/phpMyFAQ/security/advisories/GHSA-f96w-7fx2-79c8 (Exploit, vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/phpmyfaq-before-authentication-bypass-via-setup-api (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-75919?
- CVE-2026-75919 is a medium-severity vulnerability in Phpmyfaq, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-08-19.
- How severe is CVE-2026-75919?
- Medium severity. CVSS v3 base score is 5.3 out of 10.