CVE-2025-59827

Name: CVE-2025-59827
Creator: NVD / NIST
Published: 2025-09-24T21:15:32.613+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2025-59827 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Flag 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 authenticated user to assign high-privilege badges (e.g., Staff) to themselves. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

Flag 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 authenticated user to assign high-privilege badges (e.g., Staff) to themselves. This could lead to privilege escalation and impersonation of administrative roles. This issue has been patched in version 2.2.0.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.34%

26.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Flagforge	Flagforge	2.1.0

References

https://github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-7944-xvv7-cv79Vendor Advisory

Timeline

Published: Sep 24, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-59827?

How severe is CVE-2025-59827?

CVE-2025-59827 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2025-59827?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-59827?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST