CVE-2025-59833: flagforge Information Disclosure — Fix

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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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-200 CWE-200

Affected Products

Vendor	Product	Versions
flagforge	flagforge	2.1.0 — 2.3

References

Advisories & Patches

https://github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-hm85-2j65-j8j2

Frequently Asked Questions

What is CVE-2025-59833? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-59833? +

CVE-2025-59833 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-59833? +

CVE-2025-59833 affects products from flagforge, specifically: flagforge. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-59833? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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