{"id":"CVE-2021-20280","aliases":["BIT-moodle-2021-20280","EUVD-2021-0721","GHSA-x2jp-hh65-4xvf","UBUNTU-CVE-2021-20280"],"status":"published","title":"Cross-site scripting (XSS) and Server side request forgery (SSRF) in moodle","description":"Text-based feedback answers required additional sanitizing to prevent stored XSS and blind SSRF risks in moodle before 3.10.2, 3.9.5, 3.8.8, 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Tracking","Third Party Advisory","advisory","report","web"]},{"url":"https://moodle.org/mod/forum/discuss.php?d=419651","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","advisory","fix","web","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://packetstormsecurity.com/files/164817/Moodle-Cross-Site-Scripting-Server-Side-Request-Forgery.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry","advisory","evidence","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20280","tags":["web","advisory"]},{"url":"https://github.com/moodle/moodle/commit/a303eb9e9e387f95ea2a80cb1ce6c0b132ec1cc4","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM/"},{"url":"https://github.com/advisories/GHSA-x2jp-hh65-4xvf"},{"url":"https://github.com/moodle/moodle","tags":["package"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AFSNJ7XHVTC52RSRX2GBQFF3VEEAY2MS","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FGOMHMYM3WICJ6D6U22Z6LPJGT5A6MZM","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2021-20280","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-20280","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-20280","description":"Text-based 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blind SSRF risks in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2021-03-15T22:15:00Z","modified":"2026-09-23T18:46:09.817231302Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:25.728622Z"},{"id":"BIT-moodle-2021-20280","description":"Text-based feedback answers required additional sanitizing to prevent stored XSS and blind SSRF risks in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2024-03-06T11:10:58.966Z","modified":"2026-09-08T08:48:14.65553919Z","updated_at":"2026-11-02T15:28:33.469426Z"}]}}