Chamilo LMS up to 2.0.0 Profile Fields escape output

Summaryinfo

A vulnerability, which was classified as critical, was found in Chamilo LMS up to 2.0.0. This issue affects some unknown processing of the component Profile Fields. Such manipulation leads to escape output. This vulnerability is listed as CVE-2026-45144. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Chamilo LMS up to 2.0.0. Affected by this issue is some unknown functionality of the component Profile Fields. The manipulation with an unknown input leads to a escape output vulnerability. Using CWE to declare the problem leads to CWE-116. The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-45144 since 05/08/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 2.0.1 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• Chamilo

Name

• LMS

Version

• 2.0

License

• open-source

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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