{"id":"CVE-2018-1136","aliases":["EUVD-2022-5797","GHSA-xhfw-wjjc-4j5h","UBUNTU-CVE-2018-1136"],"status":"published","title":"Moodle Cross-site Scripting","description":"An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.","severity":{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01043,"percentile":0.64312,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2018-05-25T12:00:00Z","modified":"2026-10-24T10:30:16Z","fixes":[{"ecosystem":"Packagist","package":"moodle/moodle","fixed_in":["3.1.12","3.2.9","3.3.6","3.4.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.1"},{"fixed":"3.1.12"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2"},{"fixed":"3.2.9"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.3"},{"fixed":"3.3.6"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.4"},{"fixed":"3.4.3"}]}]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.1"},{"fixed":"3.1.12"}]}],"versions":["v3.1.0","v3.1.0-beta","v3.1.0-rc1","v3.1.0-rc2","v3.1.1","v3.1.10","v3.1.11","v3.1.2","v3.1.3","v3.1.4","v3.1.5","v3.1.6","v3.1.7","v3.1.8","v3.1.9"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2"},{"fixed":"3.2.9"}]}],"versions":["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"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.3"},{"fixed":"3.3.6"}]}],"versions":["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"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.4"},{"fixed":"3.4.3"}]}],"versions":["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"]},{"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":"moodle","product":"moodle"}],"references":[{"url":"http://www.securityfocus.com/bid/104307","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory","web"]},{"url":"https://moodle.org/mod/forum/discuss.php?d=371202","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1136","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xhfw-wjjc-4j5h"},{"url":"https://github.com/moodle/moodle","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2018-1136","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1136","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-1136","description":"An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.","status":"published","published":"2018-05-25T12:00:00Z","modified":"2024-08-05T03:51:48.694Z","updated_at":"2026-11-02T14:35:08.701206Z"}],"euvd":[{"id":"EUVD-2022-5797","description":"An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.","status":"published","published":"2018-05-25T12:00:00Z","modified":"2024-08-05T03:51:48Z","updated_at":"2026-11-03T02:40:16.309405Z"}],"ghsa":[{"id":"GHSA-xhfw-wjjc-4j5h","title":"Moodle Cross-site Scripting","description":"An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.","status":"published","published":"2022-05-13T01:49:13Z","modified":"2024-04-23T23:43:40Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:45.47408Z"}],"nvd":[{"id":"CVE-2018-1136","description":"An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.","status":"published","published":"2018-05-25T12:29:00.37Z","modified":"2026-06-17T01:50:33.893Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:04:27.507872Z"}],"osv":[{"id":"CVE-2018-1136","description":"An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.","status":"published","published":"2018-05-25T12:29:00.37Z","modified":"2026-10-24T10:30:16.601750344Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:07.934182Z"},{"id":"GHSA-xhfw-wjjc-4j5h","title":"Moodle Cross-site Scripting","description":"An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.","status":"published","published":"2022-05-13T01:49:13Z","modified":"2024-04-23T23:58:48.649335Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:59.835583Z"},{"id":"UBUNTU-CVE-2018-1136","description":"An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.","status":"published","published":"2018-05-25T12:29:00Z","modified":"2026-09-23T18:46:06.074102022Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:16.544091Z"}]}}