Overview
Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.
https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6 ; https://nvd.nist.gov/vuln/detail/CVE-2021-21311
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2021-21311 |
| Vendor / Product | Adminer — Adminer |
| NVD Published | 2021-02-11 |
| NVD Last Modified | 2025-10-24 |
| CVSS 3.1 Score | 7.2 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| Severity | HIGH |
| CWE | CWE-918 |
| CISA KEV Added | 2025-09-29 |
| CISA KEV Deadline | 2025-10-20 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Required Action
CISA BOD 22-01 Deadline: 2025-10-20.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2025-09-29 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2025-10-20 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2021-21311 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |