CVE-2021-21311

Adminer Server-Side Request Forgery Vulnerability

Adminer — Adminer

Added to KEV catalog: 29 September 2025
Federal remediation due date: 20 October 2025
Weakness classification (CWE): CWE-918

CISA 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

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