{"id":"CVE-2021-20282","aliases":["BIT-moodle-2021-20282","EUVD-2022-4000","GHSA-grj4-g57c-9xmv","UBUNTU-CVE-2021-20282"],"status":"published","title":"Moodle Bypass email verification secret when confirming account registration","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01317,"percentile":0.71039,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2021-03-15T21:35:56Z","modified":"2026-10-24T10:30:36Z","fixes":[{"ecosystem":"Packagist","package":"moodle/moodle","fixed_in":["3.5.17","3.8.8","3.9.5","3.10.2"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"moodle","fixed_in":["3.5.17","3.8.8","3.9.5","3.10.2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.5"},{"fixed":"3.5.17"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8"},{"fixed":"3.8.8"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.9"},{"fixed":"3.9.5"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10"},{"fixed":"3.10.2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"moodle","ranges":[{"type":"SEMVER","events":[{"introduced":"3.5.0"},{"fixed":"3.5.17"},{"introduced":"3.8.0"},{"fixed":"3.8.8"},{"introduced":"3.9.0"},{"fixed":"3.9.5"},{"introduced":"3.10.0"},{"fixed":"3.10.2"}]}]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.5"},{"fixed":"3.5.17"}]}],"versions":["v3.5.0","v3.5.0-beta","v3.5.0-rc1","v3.5.1","v3.5.10","v3.5.11","v3.5.12","v3.5.13","v3.5.14","v3.5.15","v3.5.16","v3.5.2","v3.5.3","v3.5.4","v3.5.5","v3.5.6","v3.5.7","v3.5.8","v3.5.9"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8"},{"fixed":"3.8.8"}]}],"versions":["v3.8.0","v3.8.0-beta","v3.8.0-rc1","v3.8.1","v3.8.2","v3.8.3","v3.8.4","v3.8.5","v3.8.6","v3.8.7"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.9"},{"fixed":"3.9.5"}]}],"versions":["v3.9.0","v3.9.0-beta","v3.9.0-rc1","v3.9.0-rc2","v3.9.0-rc3","v3.9.1","v3.9.2","v3.9.3","v3.9.4"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10"},{"fixed":"3.10.2"}]}],"versions":["v3.10.0","v3.10.0-beta","v3.10.0-rc1","v3.10.0-rc2","v3.10.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.9+dfsg-1","2.7.10+dfsg-1","2.7.11+dfsg-1","2.7.11+dfsg-2","2.7.12+dfsg-1","3.0.3+dfsg-0ubuntu1","3.0.3+dfsg-0ubuntu1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.3+dfsg-0ubuntu1","3.0.3+dfsg-0ubuntu1+esm1"]}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"moodle","product":"moodle"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1939046","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","advisory","report","web"]},{"url":"https://moodle.org/mod/forum/discuss.php?d=419653","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://nvd.nist.gov/vuln/detail/CVE-2021-20282","tags":["web","advisory"]},{"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/UFH5DDMU5TZ3JT4Q52WMRAHACA5MHIMT","tags":["web"]},{"url":"https://github.com/advisories/GHSA-grj4-g57c-9xmv"},{"url":"https://github.com/moodle/moodle","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-20282","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-20282","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-20282","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2021-03-15T21:35:56Z","modified":"2024-08-03T17:37:23.596Z","cwes":["CWE-863"],"updated_at":"2026-11-02T14:32:55.905855Z"}],"euvd":[{"id":"EUVD-2022-4000","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2021-03-15T21:35:56Z","modified":"2024-08-03T17:37:23Z","updated_at":"2026-11-03T03:25:08.888273Z"}],"ghsa":[{"id":"GHSA-grj4-g57c-9xmv","title":"Moodle Bypass email verification secret when confirming account registration","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2022-05-24T17:44:37Z","modified":"2024-04-23T23:38:12Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:37:44.867253Z"}],"nvd":[{"id":"CVE-2021-20282","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2021-03-15T22:15:13.327Z","modified":"2026-06-17T03:33:36.15Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:06:50.805771Z"}],"osv":[{"id":"CVE-2021-20282","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2021-03-15T22:15:13.327Z","modified":"2026-10-24T10:30:36.539333781Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.004149Z"},{"id":"GHSA-grj4-g57c-9xmv","title":"Moodle Bypass email verification secret when confirming account registration","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2022-05-24T17:44:37Z","modified":"2024-04-23T23:58:41.382482Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:46:48.191583Z"},{"id":"UBUNTU-CVE-2021-20282","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2021-03-15T22:15:00Z","modified":"2026-09-23T18:46:09.343502062Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:25.728622Z"},{"id":"BIT-moodle-2021-20282","description":"When creating a user account, it was possible to verify the account without having access to the verification email link/secret in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.","status":"published","published":"2024-03-06T11:10:49.175Z","modified":"2026-09-08T08:48:14.530020893Z","updated_at":"2026-11-02T15:28:33.469426Z"}]}}