CVE-2025-59841

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CVSS 3.1

9.8 critical

EPSS

<1%p36

Published

Sep 25, 2025 (Sep 25, 2025)

Modified

Jun 17, 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.

Vendors: flagforge
Products: flagforge
Weakness: CWE-384, CWE-613
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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