{"id":"CVE-2021-36568","aliases":["BIT-moodle-2021-36568","EUVD-2022-6801","GHSA-fm6m-fg23-67jq","UBUNTU-CVE-2021-36568"],"status":"published","title":"Moodle Cross-site Scripting vulnerability","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.","severity":{"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","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01067,"percentile":0.65261,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2022-09-13T21:06:51Z","modified":"2026-10-24T10:31:03Z","fixes":[{"ecosystem":"Packagist","package":"moodle/moodle","fixed_in":["3.11.10"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"moodle","fixed_in":["3.9.8","3.10.5","3.11.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.9.7"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10.0"},{"last_affected":"3.10.4"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.11.0"},{"fixed":"3.11.10"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"moodle","ranges":[{"type":"SEMVER","events":[{"introduced":"3.9.7"},{"fixed":"3.9.8"},{"introduced":"3.10.4"},{"fixed":"3.10.5"},{"introduced":"3.11.0"},{"fixed":"3.11.1"}]}]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.9.7"}]}],"versions":["v2.3.10","v2.3.11","v2.3.4","v2.3.5","v2.3.6","v2.3.7","v2.3.8","v2.3.9","v2.4.0","v2.4.0-rc1","v2.4.1","v2.4.10","v2.4.11","v2.4.2","v2.4.3","v2.4.4","v2.4.5","v2.4.6","v2.4.7","v2.4.8","v2.4.9","v2.5.0","v2.5.0-beta","v2.5.0-rc1","v2.5.1","v2.5.2","v2.5.3","v2.5.4","v2.5.5","v2.5.6","v2.5.7","v2.5.8","v2.5.9","v2.6.0","v2.6.0-beta","v2.6.0-rc1","v2.6.1","v2.6.10","v2.6.11","v2.6.2","v2.6.3","v2.6.4","v2.6.5","v2.6.6","v2.6.7","v2.6.8","v2.6.9","v2.7.0","v2.7.0-beta","v2.7.0-rc1","v2.7.0-rc2","v2.7.1","v2.7.10","v2.7.11","v2.7.12","v2.7.13","v2.7.14","v2.7.15","v2.7.16","v2.7.17","v2.7.18","v2.7.19","v2.7.2","v2.7.20","v2.7.3","v2.7.4","v2.7.5","v2.7.6","v2.7.7","v2.7.8","v2.7.9","v2.8.0","v2.8.0-beta","v2.8.0-rc1","v2.8.0-rc2","v2.8.1","v2.8.10","v2.8.11","v2.8.12","v2.8.2","v2.8.3","v2.8.4","v2.8.5","v2.8.6","v2.8.7","v2.8.8","v2.8.9","v2.9.0","v2.9.0-beta","v2.9.0-rc1","v2.9.0-rc2","v2.9.1","v2.9.2","v2.9.3","v2.9.4","v2.9.5","v2.9.6","v2.9.7","v2.9.8","v2.9.9","v3.0.0","v3.0.0-beta","v3.0.0-rc1","v3.0.0-rc2","v3.0.0-rc3","v3.0.0-rc4","v3.0.1","v3.0.10","v3.0.2","v3.0.3","v3.0.4","v3.0.5","v3.0.6","v3.0.7","v3.0.8","v3.0.9","v3.1.0","v3.1.0-beta","v3.1.0-rc1","v3.1.0-rc2","v3.1.1","v3.1.10","v3.1.11","v3.1.12","v3.1.13","v3.1.14","v3.1.15","v3.1.16","v3.1.17","v3.1.18","v3.1.2","v3.1.3","v3.1.4","v3.1.5","v3.1.6","v3.1.7","v3.1.8","v3.1.9","v3.2.0","v3.2.0-beta","v3.2.0-rc1","v3.2.0-rc2","v3.2.0-rc3","v3.2.0-rc4","v3.2.0-rc5","v3.2.1","v3.2.2","v3.2.3","v3.2.4","v3.2.5","v3.2.6","v3.2.7","v3.2.8","v3.2.9","v3.3.0","v3.3.0-beta","v3.3.0-rc1","v3.3.0-rc2","v3.3.0-rc3","v3.3.1","v3.3.2","v3.3.3","v3.3.4","v3.3.5","v3.3.6","v3.3.7","v3.3.8","v3.3.9","v3.4.0","v3.4.0-beta","v3.4.0-rc1","v3.4.0-rc2","v3.4.0-rc3","v3.4.1","v3.4.2","v3.4.3","v3.4.4","v3.4.5","v3.4.6","v3.4.7","v3.4.8","v3.4.9","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","v3.5.17","v3.5.18","v3.5.2","v3.5.3","v3.5.4","v3.5.5","v3.5.6","v3.5.7","v3.5.8","v3.5.9","v3.6.0","v3.6.0-beta","v3.6.0-rc1","v3.6.0-rc2","v3.6.0-rc3","v3.6.1","v3.6.10","v3.6.2","v3.6.3","v3.6.4","v3.6.5","v3.6.6","v3.6.7","v3.6.8","v3.6.9","v3.7.0","v3.7.0-beta","v3.7.0-rc1","v3.7.0-rc2","v3.7.1","v3.7.2","v3.7.3","v3.7.4","v3.7.5","v3.7.6","v3.7.7","v3.7.8","v3.7.9","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","v3.8.8","v3.8.9","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","v3.9.5","v3.9.6","v3.9.7"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10.0"},{"last_affected":"3.10.4"}]}],"versions":["v3.10.0","v3.10.1","v3.10.2","v3.10.3","v3.10.4"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.11.0"},{"fixed":"3.11.10"}]}],"versions":["v3.11.0","v3.11.1","v3.11.2","v3.11.3","v3.11.4","v3.11.5","v3.11.6","v3.11.7","v3.11.8","v3.11.9"]},{"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://drive.google.com/drive/folders/1_fO4BKpmD3avGYHSzvIXWs5owqVYgB1s?usp=sharing","tags":["x_refsource_MISC","x_transferred","Broken Link","Third Party Advisory","advisory","report"]},{"url":"https://blog.hackingforce.com.br/en/cve-2021-36568/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","advisory","evidence","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PRI4ETMQ4DJR3TZUOOGPBQ32RBD5LNGC/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERQ3NHVOK4ZXT4MS4LBQ2ZJHTON3LIMW/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36568","tags":["web","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2126857","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ERQ3NHVOK4ZXT4MS4LBQ2ZJHTON3LIMW/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PRI4ETMQ4DJR3TZUOOGPBQ32RBD5LNGC/"},{"url":"https://github.com/advisories/GHSA-fm6m-fg23-67jq"},{"url":"https://blog.hackingforce.com.br/en/cve-2021-36568","tags":["web"]},{"url":"https://github.com/moodle/moodle","tags":["package"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ERQ3NHVOK4ZXT4MS4LBQ2ZJHTON3LIMW","tags":["web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PRI4ETMQ4DJR3TZUOOGPBQ32RBD5LNGC","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2021-36568","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-36568","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-36568","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.","status":"published","published":"2022-09-13T21:06:51Z","modified":"2024-08-04T01:01:57.457Z","updated_at":"2026-11-02T14:33:05.989686Z"}],"euvd":[{"id":"EUVD-2022-6801","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.","status":"published","published":"2022-09-13T21:06:51Z","modified":"2024-08-04T01:01:57Z","updated_at":"2026-11-03T03:24:29.329171Z"}],"ghsa":[{"id":"GHSA-fm6m-fg23-67jq","title":"Moodle Cross-site Scripting vulnerability","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11.x prior to 3.11.10, Moodle 3.10.4, and Moodle 3.9.7.","status":"published","published":"2022-09-14T00:00:41Z","modified":"2023-01-30T05:03:19Z","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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:36:28.424013Z"}],"nvd":[{"id":"CVE-2021-36568","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.","status":"published","published":"2022-09-13T22:15:08.793Z","modified":"2026-06-17T03:58:56.3Z","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","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:07:06.906968Z"}],"osv":[{"id":"CVE-2021-36568","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.","status":"published","published":"2022-09-13T22:15:08.793Z","modified":"2026-10-24T10:31:03.505951216Z","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":"2026-11-02T15:44:20.434873Z"},{"id":"GHSA-fm6m-fg23-67jq","title":"Moodle Cross-site Scripting vulnerability","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11.x prior to 3.11.10, Moodle 3.10.4, and Moodle 3.9.7.","status":"published","published":"2022-09-14T00:00:41Z","modified":"2024-02-16T08:13:22.227241Z","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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:46.760785Z"},{"id":"UBUNTU-CVE-2021-36568","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.","status":"published","published":"2022-09-13T22:15:00Z","modified":"2026-09-23T18:45:45.590210974Z","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":"2026-11-02T15:54:27.870979Z"},{"id":"BIT-moodle-2021-36568","description":"In certain Moodle products after creating a course, it is possible to add in a arbitrary \"Topic\" a resource, in this case a \"Database\" with the type \"Text\" where its values \"Field name\" and \"Field description\" are vulnerable to Cross Site Scripting Stored(XSS). This affects Moodle 3.11 and Moodle 3.10.4 and Moodle 3.9.7.","status":"published","published":"2024-03-06T11:08:05.686Z","modified":"2026-09-08T08:48:14.925119504Z","updated_at":"2026-11-02T15:28:33.469426Z"}]}}