Server-Side Request Forgery (SSRF) in Chamilo LMS - CVE-2026-34160
Published: April 24, 2026
Vulnerability identifier: #VU127571
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-34160
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Chamilo
Affected software:
Chamilo LMS
Chamilo LMS
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to server-side request forgery (SSRF) in the PENS plugin endpoint at public/plugin/Pens/pens.php when processing user-controlled package-url, receipt, and alerts parameters. A remote attacker can send a specially crafted request to disclose sensitive information.
In cloud environments, exploitation can reach instance metadata services and expose credentials or identity tokens.
How to mitigate CVE-2026-34160
Install security update from vendor's website.