Is CVE-2025-59841 actively exploited?

No active exploitation of CVE-2025-59841 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-59841 be exploited remotely?

Yes. CVE-2025-59841 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-59841?

CVE-2025-59841 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2025-59841

CWE-384Published: September 25, 2025· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-59841 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.