{"id":"CVE-2026-102586","summary":"Moodle: xss via password reset link due to insufficient username escaping","details":"A flaw was found in Moodle. Insufficient sanitization of username input on the password reset page allows a remote attacker to conduct a cross-site scripting (XSS) attack. By convincing an unauthenticated user to access a specially crafted password reset link, an attacker could execute arbitrary script in the victim's browser.","modified":"2026-10-03T03:46:16.709999526Z","published":"2026-09-30T08:36:19.341Z","database_specific":{"unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"5.2.0"},{"fixed":"5.2.2"},{"introduced":"5.1.0"},{"fixed":"5.1.6"},{"introduced":"5.0.0"},{"fixed":"5.0.9"},{"fixed":"4.5.13"}]}],"cna_assigner":"fedora","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102586.json"},"references":[{"type":"WEB","url":"http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88335"},{"type":"WEB","url":"https://git.moodle.org"},{"type":"WEB","url":"https://moodle.org/mod/forum/discuss.php?d=482504"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-102586"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102586.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102586"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543641"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/moodle/moodle","events":[{"introduced":"0"},{"fixed":"8cbae18a2898cfd8266ec91ac206e12004f0ff5f"},{"introduced":"78e860178314c45441a21e0b99455400b8283d48"},{"fixed":"152bf2ebbdd1f994331af21c80332b8d9051581c"},{"introduced":"eb47eff0719455a7e1f7a9805bc75dad3f6b3995"},{"fixed":"17513f6614237b530de7903fe32117fa026384c2"},{"introduced":"c197f31fd89bf5dd5ba41661b06660167e419099"},{"fixed":"acfa383c13dd46c83ca82894a8e95fac273fda33"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"4.5.13"},{"introduced":"5.0.0"},{"fixed":"5.0.9"},{"introduced":"5.1.0"},{"fixed":"5.1.6"},{"introduced":"5.2.0"},{"fixed":"5.2.2"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*"}}],"versions":["v4.5.12","v5.2.1","v5.1.5","v5.0.8","v4.5.11","v5.1.4","v5.2.0","v5.0.7","v5.0.6","v5.1.3","v5.0.5","v5.1.2","v4.5.9","v4.5.10","v5.1.1","v5.0.4","v4.5.8","v4.5.7","v5.1.0","v5.0.3","v4.5.6","v5.0.2","v4.5.5","v5.0.1","v5.0.0","v4.5.4","v4.5.3","v4.5.2","v4.5.1","v4.5.0","v4.5.0-rc2","v4.5.0-rc1","v4.5.0-beta","v4.4.0","v4.4.0-rc2","v4.4.0-rc1","v4.4.0-beta","v4.3.0","v4.3.0-rc2","v4.3.0-rc1","v4.3.0-beta","v4.2.0","v4.2.0-rc2","v4.2.0-rc1","v4.2.0-beta","v4.1.0-beta","v4.1.0","v4.1.0-rc3","v4.1.0-rc2","v4.1.0-rc1","v4.0.0","v4.0.0-rc2","v4.0.0-rc3","v4.0.0-rc4","v4.0.0-rc1","v4.0.0-beta","v3.9.0-rc2","v3.9.0","v3.9.0-rc3","v3.9.0-rc1","v3.9.0-beta","v3.8.0","v3.8.0-rc1","v3.8.0-beta","v3.7.0","v3.7.0-rc2","v3.7.0-rc1","v3.7.0-beta","v3.6.0","v3.6.0-rc2","v3.6.0-rc3","v3.6.0-rc1","v3.6.0-beta","v3.5.0","v3.5.0-rc1","v3.5.0-beta","v3.4.0","v3.4.0-rc2","v3.4.0-rc3","v3.4.0-rc1","v3.4.0-beta","v3.3.0","v3.3.0-rc3","v3.3.0-rc2","v3.3.0-rc1","v3.3.0-beta","v3.2.0-rc2","v3.2.0","v3.2.0-rc4","v3.2.0-beta","v3.2.0-rc5","v3.2.0-rc3","v3.2.0-rc1","v3.1.0-beta","v3.1.0","v3.1.0-rc2","v3.1.0-rc1","v3.0.0-rc3","v3.0.0","v3.0.0-rc4","v3.0.0-rc2","v3.0.0-rc1","v3.0.0-beta","v2.9.0","v2.9.0-rc2","v2.9.0-rc1","v2.9.0-beta","v2.8.0","v2.8.0-rc2","v2.8.0-rc1","v2.8.0-beta","v2.7.0","v2.7.0-rc2","v2.7.0-rc1","v2.7.0-beta","v2.6.0","v2.6.0-rc1","v2.6.0-beta","v2.5.0","v2.5.0-rc1","v2.5.0-beta","v2.4.0-beta","v2.4.0-rc1","v2.4.0","v2.3.0","v2.3.0-rc1","v2.3.0-beta","v2.2.0","v2.2.0-rc1","v2.2.0-beta","v2.1.0","v2.0.1","v2.0.0","v2.0.0-rc2","v2.0.0-rc1","v1.3.0","v1.2.1","v1.2.0","v1.1.1","v1.1.0","v1.0.9","v1.0.8","v1.0.7","v1.0.6","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102586.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"}]}