CVE-2025-59833
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductFlagforge
PublishedSep 24, 2025
First seenSep 24, 2025
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- flagforge flagforge2.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| flagforge flagforge | 2.1.0 ≤ v < 2.3 | 2.3 |
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