# CVE-2021-21311: SSRF in adminer

> CVE-2021-21311: SSRF in adminer. CVSS 7.2 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2021-21311
Last updated: 2025-10-21T23:35:27Z

- Published: 2021-02-11 20:55 UTC · Updated: 2025-10-21 23:35 UTC · Assigner: GitHub\_M
- CVSS: 7.2 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- EPSS: 98.5%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-09-29, federal due date 2025-10-20, ransomware use: Unknown
- CWE: CWE-918

## 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.

## CISA 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.

## Affected vendors and products

- vrana: adminer

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-21311)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-21311)
- [https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351](https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351)
- [https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf](https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf)
- [https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6](https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6)
- [https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html](https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html)
- [https://packagist.org/packages/vrana/adminer](https://packagist.org/packages/vrana/adminer)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2021-21311 · Markdown: https://rewindex.com/cve/CVE-2021-21311.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-21311 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:15:20.585Z