Chamilo LMS up to 1.11.37/2.0.0-RC.2 Social Wall read_url_with_open_graph social_wall_new_msg_main server-side request forgery

Summaryinfo

A vulnerability was found in Chamilo LMS up to 1.11.37/2.0.0-RC.2. It has been declared as critical. This affects the function read_url_with_open_graph of the component Social Wall. Executing a manipulation of the argument social_wall_new_msg_main can lead to server-side request forgery. This vulnerability appears as CVE-2026-31941. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Chamilo LMS up to 1.11.37/2.0.0-RC.2 and classified as critical. This vulnerability affects the function read_url_with_open_graph of the component Social Wall. The manipulation of the argument social_wall_new_msg_main with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-31941 since 03/10/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available.

Upgrading to version 1.11.38 or 2.0.0-RC.3 eliminates this vulnerability. Applying the patch e3790c5f0ff3b4dc547c2099fadf5c438c1bb265 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• Chamilo

Name

• LMS

Version

• 1.11.0
• 1.11.1
• 1.11.2
• 1.11.3
• 1.11.4
• 1.11.5
• 1.11.6
• 1.11.7
• 1.11.8
• 1.11.9
• 1.11.10
• 1.11.11
• 1.11.12
• 1.11.13
• 1.11.14
• 1.11.15
• 1.11.16
• 1.11.17
• 1.11.18
• 1.11.19
• 1.11.20
• 1.11.21
• 1.11.22
• 1.11.23
• 1.11.24
• 1.11.25
• 1.11.26
• 1.11.27
• 1.11.28
• 1.11.29
• 1.11.30
• 1.11.31
• 1.11.32
• 1.11.33
• 1.11.34
• 1.11.35
• 1.11.36
• 1.11.37
• 2.0.0-RC.0
• 2.0.0-RC.1
• 2.0.0-RC.2

License

• open-source

CPE 2.3info

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CPE 2.2info

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