CVE-2021-21311
Summary
| CVE | CVE-2021-21311 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-02-11 21:15:00 UTC |
| Updated | 2021-06-24 12:50:00 UTC |
| 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. |
Risk And Classification
EPSS: 0.900720000 probability, percentile 0.997840000 (date 2026-07-22)
CISA KEV: Listed on 2025-09-29; due 2025-10-20; ransomware use Unknown
Problem Types: CWE-918
CISA Known Exploited Vulnerability
| Vendor | Adminer |
|---|---|
| Product | Adminer |
| Name | Adminer Server-Side Request Forgery Vulnerability |
| 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 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Adminer | Adminer | All | All | All | All |
| Application | Adminer | Adminer | All | All | All | All |
| Operating System | Debian | Debian Linux | 9.0 | All | All | All |
| Operating System | Debian | Debian Linux | 9.0 | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [SECURITY] [DLA 2580-1] adminer security update | MLIST | lists.debian.org | Mailing List, Third Party Advisory |
| Elasticsearch, ClickHouse: Do not print response if HTTP code is not 200 · vrana/adminer@ccd2374 · GitHub | MISC | github.com | Patch, Third Party Advisory |
| SSRF on error page of Elasticsearch and ClickHouse · Advisory · vrana/adminer · GitHub | CONFIRM | github.com | Patch, Third Party Advisory |
| vrana/adminer - Packagist | MISC | packagist.org | Product |
| github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf | MISC | github.com | Exploit, Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 180023 Debian Security Update for adminer (CVE-2021-21311)