Matrix Media Repo (MMR) allows Server-Side Request Forgery (SSRF) on redirects and federation in github.com/t2bot/matrix-media-repo

Open Source Vulnerabilities CVE-2024-52602

Matrix Media Repo (MMR) is a highly configurable multi-homeserver media repository for Matrix. Matrix Media Repo (MMR) is vulnerable to server-side request forgery, serving content from a private network it can access, under certain conditions. This is fixed in MMR v1.3.8. Users are advised to upgrade. Restricting which hosts MMR is allowed to contact via (local) firewall rules or a transparent proxy and may provide a workaround for users unable to upgrade.

Open Source Vulnerabilities GO-2025-3399

Matrix Media Repo (MMR) allows Server-Side Request Forgery (SSRF) on redirects and federation in github.com/t2bot/matrix-media-repo

Open Source Vulnerabilities GHSA-r6jg-jfv6-2fjv

### Impact Matrix Media Repo (MMR) is vulnerable to server-side request forgery, serving content from a private network it can access, under certain conditions. ### Patches This is fixed in [MMR v1.3.8](https://github.com/t2bot/matrix-media-repo/releases/tag/v1.3.8). ### Workarounds Restricting which hosts MMR is allowed to contact via (local) firewall rules or a transparent proxy. ### References https://owasp.org/www-community/attacks/Server_Side_Request_Forgery https://learn.snyk.io/lesson/ssrf-server-side-request-forgery/ https://www.agwa.name/blog/post/preventing_server_side_request_forgery_in_golang