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{{Short description|Open Source Capture-The-Flag platform for cybersecurity education}} |
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<!– Important, do not remove anything above this line before article has been created. –>{{Use dmy dates|date=January 2026}}{{Short description|Open-source capture-the-flag (CTF) platform}} |
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| name = FlagForge |
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| developer = FlagForgeCTF (community contributors) |
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Latest revision as of 14:37, 14 January 2026
Open Source Capture-The-Flag platform for cybersecurity education
Open-source capture-the-flag (CTF) platform
FlagForge is an open-source capture-the-flag (CTF) platform for hosting and participating in challenge-based cybersecurity exercises. According to its public repository documentation, it provides participant accounts, challenge listings, flag submission, and a leaderboard for scoring.[1] The project is developed publicly on GitHub and released as tagged versions (for example, a “v2.3.3” release is listed on the repository’s releases page).[2]
The platform has also been referenced in vulnerability databases in connection with disclosed security issues affecting certain versions of the software.[3][4]
History and development
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FlagForge is maintained as an open-source project on GitHub under the FlagForgeCTF organization.[1] The repository lists the software as licensed under GPL-3.0 and implemented primarily in TypeScript.[1] Public releases are distributed through GitHub’s release tagging mechanism.[2]
Repository documentation describes FlagForge as providing the core functions typical of a CTF event platform, challenge hosting, flag submission, and progress tracking through a web interface.[1] These features are commonly used to support jeopardy-style CTF formats where participants solve independent challenges to gain points and appear on a leaderboard.[5]
Independent user-generated walkthroughs have described solving individual FlagForge challenges (for example, reverse engineering and network forensics challenge writeups published on Medium).[6][7][8]
Vulnerability disclosures and database entries have documented security issues in specific FlagForge versions.
- Privilege escalation (CVE-2025-59827): NVD describes an access-control issue in version 2.1.0 involving an administrative badge-assignment endpoint, allowing an authenticated user to assign high-privilege badges to themselves; the entry states the issue was patched in version 2.2.0.[9]
- Session invalidation (CVE-2025-59841): NVD reports that versions 2.2.0 to before 2.3.1 did not properly invalidate sessions on logout, allowing continued access to protected endpoints and leaving CSRF tokens valid; the issue is described as patched in 2.3.1.[3] A Positive Technologies dbugs entry also summarizes the same issue and lists affected versions and an upgrade recommendation.[4]
