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    CVE-2025-59826

    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.

    Published:Sep 23, 2025
    Last Modified:Oct 8, 2025
    EPS:Sep 23, 2025
    EPSS Score:0.00038
    CVSS Score:7.6

    Affected Products

    Vendor
    Flagforge
    Product
    Flagforge
    Vendor
    Flagforgectf
    Product
    Flagforge

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

    CVE-2026-21868 (CVSS 7.5) — Flag Forge is a Capture The Flag (CTF) platform. Versions 2.3.2 and below have a Regular Expression Denial of …
    CVE-2025-61777 (CVSS 9.4) — Flag Forge is a Capture The Flag (CTF) platform. Starting in version 2.0.0 and prior to version 2.3.2, the `/a…
    CVE-2025-59932 (CVSS 8.6) — Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.1, the /api/resources endpo…
    CVE-2025-59843 (CVSS 6.9) — Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.2, the public endpoint /api…
    CVE-2025-59841 (CVSS 9.8) — Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.2.0 to before 2.3.1, the FlagForge web app…
    CVE-2025-59833 (CVSS 7.5) — Flag Forge is a Capture The Flag (CTF) platform. In versions from 2.1.0 to before 2.3.0, the API endpoint GET …
    CVE-2025-59827 (CVSS 9.8) — Flag Forge is a Capture The Flag (CTF) platform. In version 2.1.0, the /api/admin/assign-badge endpoint lacks …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High