FlagForgeCTF Vulnerable to Unauthorized Problem Creation
Priority LOW 33CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · High · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
Flag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, non-admin users can create arbitrary challenges, potentially introducing malicious, incorrect, or misleading content. This issue has been patched in version 2.2.0.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00235 14th 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
- No
- 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-2025-59826
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-2025-37266 FlagForgeCTF is Missing Authorization in main-v2 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
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences