CVE-2026-34160

EIP tracks 1 public exploit for CVE-2026-34160. PoCs published by romain-deperne.

AI-analyzed exploit summary This repository provides a detailed technical analysis of CVE-2026-34160, an unauthenticated SSRF vulnerability in Chamilo LMS via the PENS plugin. It includes root cause analysis, affected code snippets, and PoC curl commands demonstrating the exploit.

Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the PENS (Package Exchange Notification Services) plugin endpoint at public/plugin/Pens/pens.php is accessible without authentication and accepts a user-controlled package-url parameter that the server fetches using curl without filtering private or internal IP addresses, enabling unauthenticated Server-Side Request Forgery (SSRF). An attacker can exploit this to probe internal network services, access cloud metadata endpoints (such as 169.254.169.254) to steal IAM credentials and sensitive instance metadata, or trigger state-changing operations on internal services via the receipt and alerts callback parameters. No authentication is required to exploit either SSRF vector, significantly increasing the attack surface. This issue has been fixed in version 2.0.0-RC.3.