CVE-2026-45143
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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- CWE
- CWE-79
- Published
- 2026-09-17
- Last modified
- 2026-09-17
Affected products
- chamilo chamilo-lms
Weakness type
Related vulnerabilities
- CVE-2026-78252 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
- CVE-2026-90943 — parallax filament-comments through 3.0.0 Stored XSS via Comment Body
- CVE-2026-90561 — Strapi 4.x through 4.26.2 and 5.x before 5.48.1 Stored XSS via WYSIWYG
- CVE-2026-89256 — AVideo Bookmark Plugin Stored XSS via Chapter Names
- CVE-2026-89255 — AVideo LoginControl Stored XSS via PGP Public Key
- CVE-2026-15639 — Reflected Cross-Site Scripting
- CVE-2026-77615 — Paella Player: Stored XSS via caption cue text
- CVE-2026-63459 — Vendure: Stored XSS in the Admin Dashboard via unsafe HTML-stripping (innerHTML) of entity descriptions