CVE & CISA-KEV Catalog

CVE-2025-59843

MEDIUM
5.3
CVSS v3
NVD

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.

How to fix

Remediation Available
flagforgeNVD
Affected:>= 2.0, < 2.3.1Fixed in:2.3.1CVE-2025-59843derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

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

Exploit Intelligence

0.39%probability of exploitation in 30 days
31stpercentile

Low risk: more likely to be exploited than 31% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-359 vulnerabilities, ordered by exploit likelihood. View all

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CVE-2023-50719High7.584%-Fix
CVE-2022-0482Critical9.138%-Fix
CVE-2023-36052High8.622%-Fix
CVE-2021-22876Medium5.35.3%-Fix
CVE-2024-45591Medium5.33.4%-Fix
CVE-2022-24819Medium5.33.3%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-29.