CVE-2024-52791

Summary

CVE-2024-52791 is a vulnerability affecting Matrix Media Repo (MMR), a media repository for Matrix. The issue arises when MMR receives large amounts of JSON data from other servers during normal operation. This data can cause MMR to consume excessive memory, potentially leading to a denial-of-service condition or crashes. MMR version 1.3.8 provides a fix for this issue, and users are strongly advised to upgrade. For those unable to upgrade immediately, forward proxies can be configured to block requests from unsafe hosts. Additionally, memory limits and auto-restart options can be implemented for MMR processes, while running multiple processes concurrently can help minimize the impact of any crashes.

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