Access Control Issue in Flag Forge CTF Platform
CVE-2025-59827

8.2HIGH

Key Information:

Vendor: Flagforgectf
Status: Flagforge
Vendor: CVE Published:; 24 September 2025

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📈 Score: 465👾 Exploit Exists📰 News Worthy

What is CVE-2025-59827?

CVE-2025-59827 is a vulnerability affecting the Flag Forge Capture The Flag (CTF) platform, specifically in version 2.1.0. The vulnerability is an access control issue in the /api/admin/assign-badge endpoint, which fails to enforce proper authorization checks. As a result, any authenticated user can exploit this flaw to assign high-privilege administrative badges, such as "Staff," to themselves. This unauthorized elevation of privileges poses a serious risk to organizations using the Flag Forge platform, as it enables attackers to impersonate administrators, potentially compromising system integrity, sensitive data, and user trust.

The vulnerability has been addressed in Flag Forge version 2.2.0, which corrects the access control mechanism, thereby preventing unauthorized badge assignments. Organizations relying on this platform must ensure they upgrade to the latest version to mitigate the risks associated with this flaw.

Potential Impact of CVE-2025-59827

Privilege Escalation: The vulnerability allows unauthorized users to escalate their privileges, enabling them to perform administrative functions without consent, which can lead to significant operational disruptions.
Impersonation of Administrative Roles: Attackers can pose as legitimate administrators, potentially modifying important configurations, accessing sensitive data, or manipulating system settings to further their malicious intents.
Risk of Data Breaches: With the ability to control administrative functions, malicious actors may gain access to confidential information or user data, leading to severe data breaches that could have regulatory and reputational repercussions for affected organizations.

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