# CVE-2025-24024: Mjolnir v1.9.0 accepts commands from any room

> Mjolnir bot accepts admin commands from any room, allowing unauthorized users to perform moderation and server administration actions.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Jan 2025
- **Updated:** 21 Jan 2025
- **Also known as:** GHSA-3jq6-xc85-m394

## What is CVE-2025-24024?

CVE-2025-24024 is a critical missing authorization vulnerability in matrix-org mjolnir, published on 21 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Mjolnir is a moderation tool for Matrix. Mjolnir v1.9.0 responds to management commands from any room the bot is member of. This can allow users who aren't operators of the bot to use the bot's functions, including server administration components if enabled. Version 1.9.1 reverts the feature that introduced the bug, and version 1.9.2 reintroduces the feature safely. Downgrading to version 1.8.3 is recommended if upgrading to 1.9.1 or higher isn't possible.

Weakness: CWE-671 (Lack of Administrator Control over Security)

## Which versions are affected by CVE-2025-24024?


## How do I fix CVE-2025-24024?

No fix has been published for CVE-2025-24024 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-24024 being exploited?

There is no known exploitation of CVE-2025-24024 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-24024 and fix it if it is affected.

What it is: CVE-2025-24024 is a critical missing authorization vulnerability in matrix-org mjolnir, published on 21 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-24024 in the wild and no public exploit code.

Affected product: matrix-org mjolnir. 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-2025-24024/ (Markdown: https://insights.sbomify.com/CVE-2025-24024/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-24024
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-24024
- OSV: https://osv.dev/vulnerability/CVE-2025-24024

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-24024/
Summaries are generated and may contain mistakes; the official description above is the record.