CVE-2025-59843: flagforge — Fix

Description

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.

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CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-359 CWE-359

Affected Products

Vendor	Product	Versions
flagforge	flagforge	2.0 — 2.3.1

References

Advisories & Patches

https://github.com/FlagForgeCTF/flagForge/security/advisories/GHSA-qqjv-8r5p-7xpj

Other References

https://github.com/FlagForgeCTF/flagForge/commit/1b033f1b6e20fbf6df422d5d1afc9b2347528ace https://github.com/FlagForgeCTF/flagForge/compare/v2.3.1...v2.3.2 https://github.com/FlagForgeCTF/flagForge/releases/tag/v2.3.1

Frequently Asked Questions

What is CVE-2025-59843? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-59843? +

CVE-2025-59843 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-59843? +

CVE-2025-59843 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-2025-59843? +

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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