cyfenced.com →

[ CVE-2021-21311 · Published 11 Feb 2021 ]

Adminer Server-Side Request Forgery Vulnerability

Exploited · CISA KEV CVSS 7.2 EPSS 98%Fix available

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-09-29
  • EPSS: 98% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

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.

CISA: Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 20 Oct 2025): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

[ References ]References