CVE-2021-21311: Adminer Server-Side Request Forgery Vulnerability
High severity, CVSS 7.2. Actively exploited: in CISA KEV since 2025-09-29. EPSS: 98.5% chance of exploitation in the next 30 days.
Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before 4.7.9 there is a server-side request forgery vulnerability. Users of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected. This is fixed in version 4.7.9.
Affected products
Published 2021-02-11. Last modified 2026-06-17.