CVE-2021-21311 — Adminer Server-Side Request Forgery Vulnerability
CVE-2021-21311: Adminer Server-Side Request Forgery Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Adminer |
| Product | Adminer |
| Date added | 2025-09-29 |
| Due date | 2025-10-20 |
| Ransomware campaign use | Unknown |
Description
Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.
Required action (CISA)
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
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-21311
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog