An issue in Chamilo v1.11.* up to v1.11.18 allows attackers to execute a Server-Side Request Forgery (SSRF) and obtain information on the services running on the server via crafted requests in the social and links tools.
github.com/chamilo/chamilo-lms/commit/cc278f01864948b1fb160e03f0a3dc0875d5f81f
github.com/chamilo/chamilo-lms/commit/ea5791ff8ce6ea45148a171b0da5348a7c415e6f
github.com/chamilo/chamilo-lms/commit/ed946908fef23e8aa4cefc28f745f3cd6710099f
support.chamilo.org/projects/1/wiki/Security_issues#Issue-111-2023-04-20-Moderate-impact-Low-risk-Multiple-blind-SSRF-in-links-and-social-tools