CVE-2025-59843CWE-359

CVE-2025-59843

Medium · published September 26, 2025

CVSS v3.1
5.3
EPSS
0%
Percentile
34.6
In the wild
Unconfirmed
What it is

Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.2, the public endpoint /api/user/[username] returns user email addresses in its JSON response. The fix, intended for release in 2.3.1 but only available starting in version 2.3.2, removes email addresses from public API responses while keeping the endpoint publicly accessible. Users should upgrade to version 2.3.2 or later to eliminate exposure. There are no workarounds for this vulnerability.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00414 · 34.6th percentile
Weakness
CWE-359 · Exposure of Private Personal Information to an Unauthorized Actor
Published
2025-09-26T20:15Z
Affected products (1)
ProductVersionsFixed in
flagforge/flagforge≥ 2.0, < 2.3.12.3.1
References (4)
https://github.com/FlagForgeCTF/flagForge/commit/1b033f1b6e20fbf6df422d5d1afc9b2347528ace · [email protected]https://github.com/FlagForgeCTF/flagForge/compare/v2.3.1...v2.3.2 · [email protected]https://github.com/FlagForgeCTF/flagForge/releases/tag/v2.3.1 · [email protected]https://github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-qqjv-8r5p-7xpj · [email protected]
EPSS history
Timeline
  • 26 SEP 16:03Z
    FlagForgeCTF Exposes User Emails via Public /api/user/[username] API
    cvelistv5