CVE-2025-59841

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FlagForgeCTF/flagForge/commit/304b6c82a4f76871b336404b91e5cdd8a7d7d5bd	Patch
https://github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-h6pr-4cwv-6cjg	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:flagforge:flagforge:*:*:*:*:*:*:*:*

History

11 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Flag Forge es una plataforma de Capture The Flag (CTF). En versiones desde la 2.2.0 hasta antes de la 2.3.1, la aplicación web FlagForge gestiona incorrectamente la invalidación de sesión. Los usuarios autenticados pueden seguir accediendo a puntos finales protegidos, como /api/profile, incluso después de cerrar sesión. Los tokens CSRF también siguen siendo válidos después de cerrar sesión, lo que puede permitir acciones no autorizadas. Este problema ha sido parcheado en la versión 2.3.1.

Information

Published : 2025-09-25 16:15

Updated : 2026-10-11 20:10

NVD link : CVE-2025-59841

Mitre link : CVE-2025-59841

CVE.ORG link : CVE-2025-59841

JSON object : View

Products Affected

flagforge

flagforge

CWE

CWE-384

Session Fixation

CWE-613

Insufficient Session Expiration

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