# CVE-2025-21611: tgstation-server's role authorization incorrectly OR'd with user's enabled status

> Enabled users can bypass role restrictions to perform unauthorized actions due to incorrect logical operations in authorization checks.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Jan 2025
- **Updated:** 6 Jan 2025
- **Also known as:** CLEANSTART-2026-KM75633, GHSA-rf5r-q276-vrc4

## What is CVE-2025-21611?

CVE-2025-21611 is a high-severity missing authorization vulnerability in tgstation-server, published on 6 Jan 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

tgstation-server is a production scale tool for BYOND server management. Prior to 6.12.3, roles used to authorize API methods were incorrectly OR'd instead of AND'ed with the role used to determine if a user was enabled. This allows enabled users access to most, but not all, authorized actions regardless of their permissions. Notably, the WriteUsers right is unaffected so users may not use this bug to permanently elevate their account permissions. The fix is release in tgstation-server-v6.12.3.

Weakness: CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2025-21611?

It affects 1 product.


Products: Tgstation13 Tgstation-Server.

## How do I fix CVE-2025-21611?

Upgrade to a fixed version.

## Is CVE-2025-21611 being exploited?

There is no known exploitation of CVE-2025-21611 in the wild and no public exploit code.

## Other vulnerabilities in tgstation-server

- [CVE-2018-17107](https://insights.sbomify.com/CVE-2018-17107/): tgstation-server cached user logins in legacy server (critical 9.8)
- [CVE-2024-41799](https://insights.sbomify.com/CVE-2024-41799/): tgstation-server's DreamMaker environment files outside the deployment directory can be compiled and ran by insufficiently permissioned users (high 8.4)
- [CVE-2023-32687](https://insights.sbomify.com/CVE-2023-32687/): Insufficiently Protected ChatBot Credentials in tgstation-server (high 7.7)
- [CVE-2020-16136](https://insights.sbomify.com/CVE-2020-16136/): Path traversal in n/a (high 7.7)
- [CVE-2023-33198](https://insights.sbomify.com/CVE-2023-33198/): Incorrectly Specified Chat Message Destinations in tgstation-server and DreamMaker API (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-21611 and fix it if it is affected.

What it is: CVE-2025-21611 is a high-severity missing authorization vulnerability in tgstation-server, published on 6 Jan 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-21611 in the wild and no public exploit code.

Affected product: tgstation-server. 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-2025-21611/ (Markdown: https://insights.sbomify.com/CVE-2025-21611/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-21611
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-21611
- OSV: https://osv.dev/vulnerability/CVE-2025-21611

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-21611/
Summaries are generated and may contain mistakes; the official description above is the record.