# CVE-2026-45143

## Summary

- **CVE ID:** CVE-2026-45143
- **Severity:** CRITICAL
- **CVSS Score:** 9 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H)
- **CWE:** CWE-79
- **Published:** Sep 17, 2026
- **Last Modified:** Sep 17, 2026

## Description

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.

## Affected Products

- chamilo — chamilo-lms (>= 2.0.0, < 2.0.1)

## References

- [CNA](https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-x88v-rg6r-vqq6)
- [CNA](https://github.com/chamilo/chamilo-lms/commit/b2c91c021fc5ab7e91feb4927c4c676f77034ac5)
- [CNA](https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.1)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._