{"id":"CVE-2021-21311","aliases":["GHSA-x5r2-hj5c-8jx6"],"url":"https://o3.security/vulnerability/CVE-2021-21311","summary":"SSRF in adminer","details":"### Impact\nUsers of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected.\n\n### Patches\nPatched by ccd2374b, included in version [4.7.9](https://github.com/vrana/adminer/releases/tag/v4.7.9).\n\n### Workarounds\n* Use a single driver version (e.g. `adminer-mysql.php`).\n* 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/).\n\n### References\nhttps://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Comment at ccd2374b.","published":"2021-02-11T21:15:13.820Z","modified":"2026-10-20T10:53:33.505547597Z","cvss":{"score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"},"epss":{"score":0.90461,"percentile":0.99794,"asOf":"2026-09-16"},"cisaKev":{"dateAdded":"2025-09-29","dueDate":"2025-10-20","knownRansomwareCampaignUse":false},"exploitsKnown":4,"affectedPackages":[{"ecosystem":"Packagist","name":"vrana/adminer","fixedVersion":"4.7.9"}],"fix":{"url":"https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351","label":"vrana/adminer@ccd2374"},"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21311"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html"},{"type":"ADVISORY","url":"https://packagist.org/packages/vrana/adminer"},{"type":"FIX","url":"https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351"},{"type":"FIX","url":"https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6"},{"type":"EVIDENCE","url":"https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21311"},{"type":"PACKAGE","url":"https://github.com/vrana/adminer"},{"type":"WEB","url":"https://sourceforge.net/p/adminer/news/2021/02/adminer-479-released"}],"provenance":{"sources":["OSV.dev","CISA KEV","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:53:33.505547597Z"}}