{"schema":"threatline.record/2","record":{"id":"CVE-2021-21311","aliases":["GHSA-x5r2-hj5c-8jx6"],"summary":"Adminer Server-Side Request Forgery Vulnerability","details":"Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.","categories":["Applications & CMS"],"product":"Adminer","vendor":"Adminer","ecosystem":"Packagist","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-21311","source_modified_at":"2025-10-21T23:35:27.923Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"adminer","vendor":"vrana","versions":[{"status":"affected","version":">= 4.0.0, < 4.7.9"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-x5r2-hj5c-8jx6","source_modified_at":"2026-09-10T03:49:14.190623191Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"vrana/adminer","ecosystem":"Packagist","purl":"pkg:composer/vrana/adminer"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.9"}]}],"versions":["v4.2.0","v4.2.1","v4.2.2","v4.2.3","v4.2.4","v4.2.5","v4.3.0","v4.3.1","v4.4.0","v4.5.0","v4.6.0","v4.6.1","v4.6.2","v4.6.3","v4.7.0","v4.7.1","v4.7.2","v4.7.3","v4.7.4","v4.7.5","v4.7.6","v4.7.7","v4.7.8"]}],"fixed_versions":[{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-x5r2-hj5c-8jx6","source_modified_at":"2026-09-10T03:49:14.190623191Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"vrana/adminer","ecosystem":"Packagist","purl":"pkg:composer/vrana/adminer"},"version":"4.7.9"}],"cvss":7.2,"severity":"High","kev":{"listed":true,"date_added":"2025-09-29","due_date":"2025-10-20","required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.98464,"percentile":0.9992,"score_date":"2026-10-23"},"published_at":"2021-02-11T20:55:15.000Z","modified_at":"2026-09-10T03:49:14.190623191Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2021-21311","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:35:27.923Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-x5r2-hj5c-8jx6","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-09-10T03:49:14.190623191Z"},{"source":"Nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21311.yaml","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":null},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2021-21311","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","OSV","Nuclei","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21311","source":"CISA KEV"},{"source":"CVE List","url":"https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://packagist.org/packages/vrana/adminer","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21311","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"partial","assessed_at":"2025-09-27T03:55:28.265761Z"},"exploits":[{"source":"Nuclei","kind":"Scanner template","name":"Adminer <4.7.9 - Server-Side Request Forgery","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21311.yaml"}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-10T03:49:14.190623191Z","content_hash":"a84e2bfac2d0410b72210de4a61806ba429a0048e63f04ef85ed2973092f82d8"}}