CVE-2025-59833CWE-200

FlagForgeCTF Hint Exposure via API

High · published September 24, 2025

CVSS v3.1
7.5
EPSS
0%
Percentile
27.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00346 · 27.0th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2025-09-24T20:25Z
EPSS history
Timeline
  • 24 SEP 20:25Z
    FlagForgeCTF Hint Exposure via API
    cvelistv5