Auth bypass in Flagforge
CVE-2025-61777
Flag Forge is a Capture The Flag (CTF) platform. Starting in version 2.0.0 and prior to version 2.3.2, the `/api/admin/badge-templates` (GET) and `/api/admin/badge-templates/create` (POST) endpoints previously allowed access without authen…
Vulnerability class: Information Disclosure
EPSS: 0.004 (34.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
Affected products
- Flagforge
- Flagforgectf Flagforge — versions >= 2.0.0, < 2.3.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-61777?
- CVE-2025-61777 is a critical-severity vulnerability in Flagforge, classified under Information Disclosure. CVSS score: 9.4/10. Published 2025-10-06.
- How severe is CVE-2025-61777?
- Critical severity. CVSS v3 base score is 9.4 out of 10.
- Is CVE-2025-61777 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.