CVE-2021-21311

Product

Adminer / Adminer

Vulnerability

Adminer Server-Side Request Forgery Vulnerability

Added to KEV

Sep 29, 2025

Remediate by

Oct 20, 2025

Known ransomware use

No

Summary description

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

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6 ; https://nvd.nist.gov/vuln/detail/CVE-2021-21311