# CVE-2025-59827: FlagForgeCTF is Missing Authorization in main-v2

> An authenticated user can assign high-privilege badges to themselves due to missing access controls, leading to privilege escalation.

- **Severity:** High 8.2 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Sep 2025
- **Updated:** 24 Sep 2025

## What is CVE-2025-59827?

CVE-2025-59827 is a high-severity missing authorization vulnerability in FlagForgeCTF flagForge, published on 24 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Flag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, the /api/admin/assign-badge endpoint lacks proper access control, allowing any authenticated user to assign high-privilege badges (e.g., Staff) to themselves. This could lead to privilege escalation and impersonation of administrative roles. This issue has been patched in version 2.2.0.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2025-59827?

It affects 1 product.


Products: Flagforge Flagforge.

## How do I fix CVE-2025-59827?

No fix has been published for CVE-2025-59827 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-59827 being exploited?

There is no known exploitation of CVE-2025-59827 in the wild and no public exploit code.

## Other vulnerabilities in FlagForgeCTF flagForge

- [CVE-2025-59841](https://insights.sbomify.com/CVE-2025-59841/): FlagForgeCTF's Improper Session Handling Allows Access After Logout (critical 9.8)
- [CVE-2025-61777](https://insights.sbomify.com/CVE-2025-61777/): FlagForge Allows Unauthenticated Badge Template API Access (critical 9.4)
- [CVE-2025-59932](https://insights.sbomify.com/CVE-2025-59932/): FlagForgeCTF Unauthenticated Resource Modification/Deletion (high 8.6)
- [CVE-2025-59826](https://insights.sbomify.com/CVE-2025-59826/): FlagForgeCTF Vulnerable to Unauthorized Problem Creation (high 7.6)
- [CVE-2026-21868](https://insights.sbomify.com/CVE-2026-21868/): Flag Forge has ReDoS Vulnerability in User Profile Lookup API (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-59827 and fix it if it is affected.

What it is: CVE-2025-59827 is a high-severity missing authorization vulnerability in FlagForgeCTF flagForge, published on 24 Sep 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-2025-59827 in the wild and no public exploit code.

Affected product: FlagForgeCTF flagForge. 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-2025-59827/ (Markdown: https://insights.sbomify.com/CVE-2025-59827/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-59827
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-59827
- OSV: https://osv.dev/vulnerability/CVE-2025-59827

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-59827/
Summaries are generated and may contain mistakes; the official description above is the record.