CVE-2026-31941 Server-Side Request Forgery (SSRF) in Chamilo LMS
An authenticated attacker can exploit an SSRF vulnerability in Chamilo LMS to force the server to make arbitrary HTTP requests, potentially accessing internal services and cloud metadata.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-31941?
CVE-2026-31941 is a high-severity server-side request forgery vulnerability in Chamilo Chamilo Lms, published on 10 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, Chamilo LMS contains a Server-Side Request Forgery (SSRF) vulnerability in the Social Wall feature. The endpoint read_url_with_open_graph accepts a URL from the user via the social_wall_new_msg_main POST parameter and performs two server-side HTTP requests to that URL without validating whether the target is an internal or external resource. This allows an authenticated attacker to force the server to make arbitrary HTTP requests to internal services, scan internal ports, and access cloud instance metadata. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.
Weakness: CWE-918
Which versions are affected by CVE-2026-31941?
It affects 1 product.
Products include Chamilo Chamilo Lms.
How do I fix CVE-2026-31941?
No fix has been published for CVE-2026-31941 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-31941 being exploited?
There is no known exploitation of CVE-2026-31941 in the wild and no public exploit code.
Other vulnerabilities in Chamilo Chamilo Lms
Sources
Also known as GHSA-q74c-mx8x-489h.