SSRF in adminer
CISA confirms exploitation of this vulnerability in real attacks. Prioritise checking whether your application is affected. CISA KEV · CC0 1.0
Impact
Users of Adminer versions bundling all drivers (e.g. adminer.php) are affected.
Patches
Patched by ccd2374b, included in version 4.7.9.
Workarounds
- Use a single driver version (e.g.
adminer-mysql.php). - Protect access to Adminer also by other means, e.g. by HTTP password, IP address limiting or by OTP plugin.
References
https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf
For more information
If you have any questions or comments about this advisory:
- Comment at ccd2374b.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | vrana/adminer | < 4.7.9 | 4.7.9 |
References
- https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6
- https://nvd.nist.gov/vuln/detail/CVE-2021-21311
- https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351
- https://github.com/vrana/adminer
- https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf
- https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html
- https://packagist.org/packages/vrana/adminer
- https://sourceforge.net/p/adminer/news/2021/02/adminer-479-released
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21311
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:H- Weakness (CWE)
CWE-918- Platform
- Composer
- Package
vrana/adminer- Disclosed
- 11.02.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-x5r2-hj5c-8jx6 - CC BY 4.0
Vulnerability history: vrana/adminer
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 8
- First → latest
- 02.2021 02.2026
- Without a fix
- 1
- Exploited in attacks
- 1
Severity breakdown
- High 6
- Medium 2
Disclosures per year
- 2021: 3
- 2022: 2
- 2023: 0
- 2024: 1
- 2025: 1
- 2026: 1
-
SSRF in adminer this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.