FlagForgeCTF is Missing Authorization in main-v2
Priority MEDIUM 48CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.
Summary
Flag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, the /api/admin/assign-badge endpoint lacks proper access control, allowing any authenticated user to assign high-privilege badges (e.g., Staff) to themselves. This could lead to privilege escalation and impersonation of administrative roles. This issue has been patched in version 2.2.0.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00371 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| FlagForgeCTF | flagForge | = 2.1.0 | — | No fix listed | CNA |
- flagForge VendorFlagForgeCTF Affected = 2.1.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:flagforge:flagforge:2.1.0:*:*:*:*:*:*:* | 2.1.0 | Vulnerable | FlagForgeCTF |
- cpe:2.3:a:flagforge:flagforge:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·FlagForgeCTF
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-59827
References
More FlagForgeCTF Flagforge vulnerabilities
- TI-2025-38170 FlagForge Allows Unauthenticated Badge Template API Access CVSS 3.1CRITICAL 9.4
- TI-2025-37280 FlagForgeCTF's Improper Session Handling Allows Access After Logout CVSS 3.1CRITICAL 9.8
- TI-2025-37320 FlagForgeCTF Unauthenticated Resource Modification/Deletion CVSS 3.1HIGH 8.6
- TI-2026-17569 Flag Forge has ReDoS Vulnerability in User Profile Lookup API CVSS 3.1HIGH 7.5
- TI-2025-37272 FlagForgeCTF Hint Exposure via API CVSS 3.1HIGH 7.5
- TI-2025-37282 FlagForgeCTF Exposes User Emails via Public /api/user/[username] API CVSS 4.0MEDIUM 6.9
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences