# CVE-2025-59841

## Summary

- **CVE ID:** CVE-2025-59841
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-384, CWE-613
- **Published:** Sep 25, 2025
- **Last Modified:** Mar 13, 2026

## Description

Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web application improperly handles session invalidation. Authenticated users can continue to access protected endpoints, such as /api/profile, even after logging out. CSRF tokens are also still valid post-logout, which can allow unauthorized actions. This issue has been patched in version 2.3.1.

## Affected Products

- FlagForgeCTF — flagForge (>= 2.2.0, < 2.3.1)

## References

- [CNA](https://github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-h6pr-4cwv-6cjg)
- [CNA](https://github.com/FlagForgeCTF/flagForge/commit/304b6c82a4f76871b336404b91e5cdd8a7d7d5bd)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.42%
- **EPSS Percentile:** 35.6

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._