CVE-2021-21311: SSRF in adminer

high KEV Affects vrana/adminer. Feed 2026.10.29.4, updated 2026-10-29; published 2021-02-11; advisory modified 2026-09-10; listed on CISA KEV 2025-09-29.

SSRF in adminer

Package: vrana/adminer Composer
Affected versions: <4.7.9
Fixed in: 4.7.9
Severity: high CVSS 7.2
Exploitation: KEV listed by CISA as actively exploited · EPSS 98% (99.9th percentile)
Published: 2021-02-11
Source: osv.dev

References

CWE-918

NVD record vrana/adminer advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

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CVE-2020-35572 medium vrana/adminer via XSS in the history parameter in SQL command same package: vrana/adminer
CVE-2026-25892 high Adminer has an Unauthenticated Persistent DoS via Array Injection in ?script=version Endpo same package: vrana/adminer
CVE-2025-43960 high Adminer PHP Object Injection issue leads to Denial of Service same package: vrana/adminer