CVE-2026-34239 Chamilo Authenticated Remote Code Execution
Authenticated users in Chamilo LMS can execute arbitrary code via the language AJAX endpoint due to insufficient authorization checks.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-34239?
CVE-2026-34239 is a high-severity code injection vulnerability in chamilo-lms, published on 20 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Chamilo version 1.11.40 and earlier are vulnerable to authenticated remote code execution in the main/inc/ajax/lang.ajax.php path. This endpoint is protected only by `api_protect_course_script(true)`, which means any authenticated user enrolled in a course (student, teacher, DRH) can reach it.
Weakness: CWE-285
Which versions are affected by CVE-2026-34239?
How do I fix CVE-2026-34239?
No fix has been published for CVE-2026-34239 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-34239 being exploited?
There is no known exploitation of CVE-2026-34239 in the wild and no public exploit code.
Sources
Also known as GHSA-4hwq-pv7c-3928.