{"id":"CVE-2021-31779","aliases":["EUVD-2021-1130","GHSA-m2q4-qghh-p9cq"],"status":"published","title":"Server-Side Request Forgery in yoast_seo","description":"The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00474,"percentile":0.41468,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-918"],"published":"2021-04-28T06:23:48Z","modified":"2026-06-17T03:52:13Z","fixes":[{"ecosystem":"Packagist","package":"yoast-seo-for-typo3/yoast_seo","fixed_in":["7.2.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"yoast-seo-for-typo3/yoast_seo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.1"}]}]},{"source":"osv","ecosystem":"Packagist","package":"yoast-seo-for-typo3/yoast_seo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.1"}]}],"versions":["7.1.0","7.1.1","7.1.2","7.1.3","7.2.0","v1.0","v1.0-beta","v1.0-rc","v1.0.1","v1.1.0","v1.1.1","v1.1.2","v1.2.0","v1.2.1","v1.2.2","v1.2.3","v1.3.0","v1.4.0","v1.4.1","v2.0.0","v2.0.1","v2.0.2","v2.1.0","v3.0.0","v3.0.1","v3.0.2","v3.0.3","v3.0.4","v3.0.5","v4.0.0","v4.1.0","v5.0.0","v5.0.1","v5.1.0","v5.1.1","v6.0.0","v6.0.1","v7.0.0","v7.0.1","v7.0.2","v7.0.3","v7.0.4","v7.0.5","v7.0.6","v7.0.7"]}],"products":[{"vendor":"yoast","product":"yoast_seo"}],"references":[{"url":"https://typo3.org/security/advisory/typo3-ext-sa-2021-006","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31779","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-m2q4-qghh-p9cq"}],"sources":{"cve":[{"id":"CVE-2021-31779","description":"The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.","status":"published","published":"2021-04-28T06:23:48Z","modified":"2024-08-03T23:10:29.943Z","updated_at":"2026-11-02T14:33:05.665371Z"}],"euvd":[{"id":"EUVD-2021-1130","description":"The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.","status":"published","published":"2021-04-28T06:23:48Z","modified":"2024-08-03T23:10:29Z","updated_at":"2026-11-03T03:24:38.423371Z"}],"ghsa":[{"id":"GHSA-m2q4-qghh-p9cq","title":"Server-Side Request Forgery in yoast_seo","description":"The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.","status":"published","published":"2021-05-21T19:21:38Z","modified":"2023-02-01T05:05:55Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:36:36.66596Z"}],"nvd":[{"id":"CVE-2021-31779","description":"The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.","status":"published","published":"2021-04-28T07:15:07.557Z","modified":"2026-06-17T03:52:13.477Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:06:52.81233Z"}],"osv":[{"id":"GHSA-m2q4-qghh-p9cq","title":"Server-Side Request Forgery in yoast_seo","description":"The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.","status":"published","published":"2021-05-21T19:21:38Z","modified":"2023-11-08T04:05:50.727002Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:46:51.10002Z"}]}}