GHSA-r6jg-jfv6-2fjv
Matrix Media Repo (MMR) allows Server-Side Request Forgery (SSRF) on redirects and federation
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/t2bot/matrix-media-repo | < 1.3.8 | 1.3.8 |
Details
As written in the advisory (Markdown source, shown as plain text).
### 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
References
External links from the advisory. They lead to third-party sites.
- https://github.com/t2bot/matrix-media-repo/security/advisories/GHSA-r6jg-jfv6-2fjv
- https://nvd.nist.gov/vuln/detail/CVE-2024-52602
- https://github.com/t2bot/matrix-media-repo
- https://github.com/t2bot/matrix-media-repo/releases/tag/v1.3.8
- https://learn.snyk.io/lesson/ssrf-server-side-request-forgery
- https://owasp.org/www-community/attacks/Server_Side_Request_Forgery
- https://pkg.go.dev/vuln/GO-2025-3399
- https://www.agwa.name/blog/post/preventing_server_side_request_forgery_in_golang