{"id":"CVE-2019-3851","aliases":["EUVD-2022-4781","GHSA-pj45-hp8h-289r"],"status":"published","title":"Moodle Secure layout contained an insecure link in Boost theme","description":"A vulnerability was found in moodle before versions 3.6.3 and 3.5.5. There was a link to site home within the the Boost theme's secure layout, meaning students could navigate out of the page.","severity":{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00883,"percentile":0.59436,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2019-03-26T17:46:59Z","modified":"2026-10-24T10:30:42Z","fixes":[{"ecosystem":"Packagist","package":"moodle/moodle","fixed_in":["3.5.5","3.6.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.5"},{"fixed":"3.5.5"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.6"},{"fixed":"3.6.3"}]}]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.5"},{"fixed":"3.5.5"}]}],"versions":["v3.5.0","v3.5.0-beta","v3.5.0-rc1","v3.5.1","v3.5.2","v3.5.3","v3.5.4"]},{"source":"osv","ecosystem":"Packagist","package":"moodle/moodle","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.6"},{"fixed":"3.6.3"}]}],"versions":["v3.6.0","v3.6.0-beta","v3.6.0-rc1","v3.6.0-rc2","v3.6.0-rc3","v3.6.1","v3.6.2"]}],"products":[{"vendor":"[unknown]","product":"moodle"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"moodle","product":"moodle"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3851","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Third Party Advisory","fix","web"]},{"url":"https://moodle.org/mod/forum/discuss.php?d=384014#p1547746","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-3851","tags":["advisory"]},{"url":"https://github.com/moodle/moodle/commit/7f22b14efb3408645cede026ad11126f17e3f59a","tags":["web"]},{"url":"https://github.com/moodle/moodle/commit/911f7488068a56b05b0ad87be8f9e132075ab0a6","tags":["web"]},{"url":"https://github.com/moodle/moodle/commit/c430bed525c4c7e6e5a1c0f7222bc323cf9b6245","tags":["web"]},{"url":"https://github.com/advisories/GHSA-pj45-hp8h-289r"},{"url":"https://github.com/moodle/moodle","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2019-3851","description":"A vulnerability was found in moodle before versions 3.6.3 and 3.5.5. 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There was a link to site home within the the Boost theme's secure layout, meaning students could navigate out of the page.","status":"published","published":"2022-05-13T01:22:27Z","modified":"2024-01-26T19:27:04Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T14:37:33.019154Z"}],"nvd":[{"id":"CVE-2019-3851","description":"A vulnerability was found in moodle before versions 3.6.3 and 3.5.5. 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