Medium severity · published Apr 10, 2026
CVE-2026-31941
Server-Side Request Forgery (SSRF) in Chamilo LMS
6.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CH
chamilo-lms · chamilo
< 1.11.38; >= 2.0.0-alpha.1, < 2.0.0-RC.3 · source: vendor
CL
Chamilo Lms · Chamilo
before 1.11.38; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; +5 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31941
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-31941
Patch
https://github.com/chamilo/chamilo-lms/commit/e3790c5f0ff3b4dc547c2099fadf5c438c1bb265
Patch
https://github.com/chamilo/chamilo-lms/commit/ea6b7b7e90580c9b01dc4bcafe4ad737061e0ead
Vendor Advisory
https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-q74c-mx8x-489h
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