{"id":"CVE-2026-45143","summary":"Chamilo LMS: Student-to-admin stored XSS in private messages via v-html","details":"Chamilo LMS is an open-source learning management system. From 2.0.0 through at least 2.1.0, Chamilo LMS stores private Message.content without server-side sanitization and renders it as HTML in assets/vue/views/message/MessageShow.vue and public/main/template/default/message/view_message.html.twig. An authenticated low-privilege user, including a student, can directly address crafted message content to an administrator because the message creation flow permits a sender to select another user as the recipient. The content executes in the recipient's browser when the recipient opens the routine inbox or message view, without requiring a link click, and can expose session credentials or permit actions as the administrator. This vulnerability is fixed in 2.0.1.","aliases":["GHSA-x88v-rg6r-vqq6"],"modified":"2026-09-19T03:46:21.223449293Z","published":"2026-09-17T20:09:57.972Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45143.json"},"references":[{"type":"WEB","url":"https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45143.json"},{"type":"ADVISORY","url":"https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-x88v-rg6r-vqq6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45143"},{"type":"FIX","url":"https://github.com/chamilo/chamilo-lms/commit/b2c91c021fc5ab7e91feb4927c4c676f77034ac5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chamilo/chamilo-lms","events":[{"introduced":"592d4dfa24044c671690e1533f8ce9877011f0a7"},{"fixed":"b2c91c021fc5ab7e91feb4927c4c676f77034ac5"},{"fixed":"9fd68157031e0e65ffbb1779fe1b3803da7eb55b"}],"database_specific":{"extracted_events":[{"introduced":"2.0.0"},{"fixed":"2.0.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45143.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"}]}