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🐘 Packagist

GHSA-x5r2-hj5c-8jx6

HIGH

SSRF in adminer

Also known asCVE-2021-21311
Published
Feb 11, 2021
Updated
Mar 13, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
3 known

EPSS Exploitation Probability

via FIRST.org ↗
90.1%probability of exploitation in next 30 days
Very High Risk100th percentile-0.39%
88.8%91.0%93.2%95.5%93.8%90.1%Jan 26May 26Jul 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected
🐘vrana/adminer

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

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 Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistvrana/adminerall versions4.7.9
Exploits & PoCs
3

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for vrana/adminer. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update vrana/adminer to 4.7.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x5r2-hj5c-8jx6 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-x5r2-hj5c-8jx6 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-x5r2-hj5c-8jx6. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Impact Users of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected. ### Patches Patched by ccd2374b, included in version [4.7.9](https://github.com/vrana/adminer/releases/tag/v4.7.9). ### 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](https://www.adminer.org/plugins/). ### References https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf ### For more information If you have any questions or comments about this advisory: * Co
O3 Security · Impact-Aware SCA

Is GHSA-x5r2-hj5c-8jx6 in your dependencies?

O3 detects GHSA-x5r2-hj5c-8jx6 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.