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Vulnerability record · CVE-2025-59932 · published 27 September 2025

CVE-2025-59932: Flagforge improper access control vulnerability

Flagforge · Flagforge

Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.1, the /api/resources endpoint previously allowed POST and DELETE requests without proper authentication or authorization. This could have enabled unauthorized users to create, modify, or delete resources on the platform. The issue has been fixed in FlagForge version 2.3.1.

8.2 CVSS 3.1 High EPSS 0.37% · top 72.0% CWE-284 · Improper access control
8.2CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.1, the /api/resources endpoint previously allowed POST and DELETE requests without proper authentication or authorization. This could have enabled unauthorized users to create, modify, or delete resources on the platform. The issue has been fixed in FlagForge version 2.3.1.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-59841Flagforge insufficient session expiration vulnerabilityFlag 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 inv…EPSS 0.42%9.8CVE-2025-59827Flagforge missing authorization vulnerabilityFlag 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 aut…EPSS 0.37%9.1CVE-2025-61777Flagforge information exposure vulnerabilityFlag Forge is a Capture The Flag (CTF) platform. Starting in version 2.0.0 and prior to version 2.3.2, the `/api/admin/badge-templates` (GET) and `/a…EPSS 0.45%7.6CVE-2025-59826Flagforge missing authorization vulnerabilityFlag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, non-admin users can create arbitrary challenges, potentially introducing malicious…EPSS 0.23%7.5CVE-2026-21868Flagforge inefficient regular expression (redos) vulnerabilityFlag Forge is a Capture The Flag (CTF) platform. Versions 2.3.2 and below have a Regular Expression Denial of Service (ReDoS) vulnerability in the us…EPSS 0.31%7.5CVE-2025-59833Flagforge information exposure vulnerabilityFlag Forge is a Capture The Flag (CTF) platform. In versions from 2.1.0 to before 2.3.0, the API endpoint GET /api/problems/:id returns challenge hin…EPSS 0.35%6.9CVE-2025-59843Flagforge vulnerabilityFlag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.2, the public endpoint /api/user/[username] returns user email add…EPSS 0.41%7.8CVE-2026-81963Windows Update Stack link-following privilege escalationWindows Update Stack resolves links improperly before accessing files, a link-following flaw (CWE-59) compounded by improper access control (CWE-284)…KEVEPSS 0.39%analysed

Source: NIST National Vulnerability Database (record CVE-2025-59932), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.