CVE-2026-45144
Chamilo LMS: Stored XSS in public user-profile fields
Chamilo LMS is an open-source learning management system. From 2.0.0 until 2.0.1, `GET /user/{username}` is anonymously reachable and renders six user-editable profile fields (`firstname`, `lastname`, `competences`, `openarea`, `teach`, and `diplomas`) inside `{% autoescape false %}`, without server-side sanitization on the write path. A ROLE_STUDENT attacker can plant HTML in their own profile; self-registration, when enabled, lets an otherwise anonymous attacker obtain that role. The stored content executes in the browser of any visitor, including administrators, who follows the public profile link, potentially allowing account takeover through session, JWT, or `localStorage` exfiltration. This issue is fixed in version 2.0.1.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| chamilo-lms chamilo |
>= 2.0.0, < 2.0.1 (affected) | CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.9 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L | CNA: GitHub_M |
| 3.1 / 8.9 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-9833-c7cj-x9xmCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/chamilo/chamilo-lms/commit/0ba260a851ef48506814baa7a20534c8f0c35057CNA: GitHub_M · x_refsource_MISC
- https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.1CNA: GitHub_M · x_refsource_MISC
- https://github.com/chamilo/chamilo-lms/commit/0ba260a851ef48506814baa7a20534c8f0c35057[email protected]
- https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.1[email protected]
- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-9833-c7cj-x9xm[email protected]
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