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CVE-2021-21311

High · CVSS 7.2EPSS 90.5%CISA KEVCWE-918 · Server-Side Request Forgery (SSRF)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

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.

Published

Community ground truth

Community verdict

2 verdicts
Not a real issue

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Community real-world severity: High (High 2) — CVSS base score 7.2

In line with its CVSS base score.

Field notes & remediation

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  • 0
    Field note · Waleed AzizCurated

    Confirmed exploited in the wild — listed in the CISA KEV catalog (added 2025-09-29). Treat as real and prioritize patching over triage.

Same weaknessCWE-918 · Server-Side Request Forgery (SSRF).