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

> Remote attackers can cause denial of service in RocketChat via inefficient regular expression complexity in the IRC message parser.

- **Severity:** Medium 5.3 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2025
- **Updated:** 9 Jun 2025
- **Also known as:** GHSA-prxp-75xx-3cxw

## What is CVE-2025-5892?

CVE-2025-5892 is a medium-severity denial of service vulnerability in Rocket.chat Rocket.chat, published on 9 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-400 (Uncontrolled Resource Consumption), CWE-1333 (Inefficient Regular Expression Complexity)

## Which versions are affected by CVE-2025-5892?

It affects 1 product.


Products: Rocket.chat Rocket.chat.

## How do I fix CVE-2025-5892?

No fix has been published for CVE-2025-5892 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-5892 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5892 exists.

## Other vulnerabilities in Rocket.chat Rocket.chat

- [CVE-2026-58066](https://insights.sbomify.com/CVE-2026-58066/): Auth bypass in Rocket.Chat (critical 9.8)
- [CVE-2026-29198](https://insights.sbomify.com/CVE-2026-29198/): SQL injection in Rocket.Chat (critical 9.8)
- [CVE-2023-28316](https://insights.sbomify.com/CVE-2023-28316/): Security feature bypass in Rocket.Chat (critical 9.8)
- [CVE-2022-44567](https://insights.sbomify.com/CVE-2022-44567/): Command injection in Rocket.chat - Electron Desktop (critical 9.8)
- [CVE-2021-22910](https://insights.sbomify.com/CVE-2021-22910/): Code injection in Rocket.Chat server (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-5892 and fix it if it is affected.

What it is: CVE-2025-5892 is a medium-severity denial of service vulnerability in Rocket.chat Rocket.chat, published on 9 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-5892 exists.

Affected product: Rocket.chat Rocket.chat. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-5892/ (Markdown: https://insights.sbomify.com/CVE-2025-5892/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-5892
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-5892
- OSV: https://osv.dev/vulnerability/CVE-2025-5892

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-5892/
Summaries are generated and may contain mistakes; the official description above is the record.