Unrated severityNVD Advisory· Published Sep 24, 2025· Updated Sep 24, 2025
FlagForgeCTF Hint Exposure via API
CVE-2025-59833
Description
Flag 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 hints in plaintext within the question object, regardless of whether the user has unlocked them via point deduction. Users can view all hints for free, undermining the business logic of the platform and reducing the integrity of the challenge system. This issue has been patched in version 2.3.0.
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Affected products
2>=2.1.0 <2.3.0+ 1 more
- (no CPE)range: >=2.1.0 <2.3.0
- (no CPE)range: >= 2.1.0, < 2.3.0
Patches
Vulnerability mechanics
References
1- github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-hm85-2j65-j8j2mitrex_refsource_CONFIRM
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