CVE-2025-59826— FlagForgeCTF Vulnerable to Unauthorized Problem Creation
Quick assessment
Affected
FlagForgeCTF flagForge
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Flag Forge是FlagForge开源的一个易于使用的CTF平台。 Flag Forge 2.1.0版本存在安全漏洞，该漏洞源于非管理员用户可以创建任意挑战，可能导致恶意、错误或误导性内容。
Possible ATT&CK Techniques 1 AI
T1048 · Exfiltration Over Alternative Protocol
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I. Basic Information for CVE-2025-59826
Vulnerability Information
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Vulnerability Title
FlagForgeCTF Vulnerable to Unauthorized Problem Creation
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Flag Forge 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flag Forge是FlagForge开源的一个易于使用的CTF平台。 Flag Forge 2.1.0版本存在安全漏洞，该漏洞源于非管理员用户可以创建任意挑战，可能导致恶意、错误或误导性内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| FlagForgeCTF | flagForge | = 2.1.0 | - |
|
II. Public POCs for CVE-2025-59826
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2025-59826 (1)
IV. Related Vulnerabilities
Same product: flagForge
-
CVE-2026-21868
Flag Forge has ReDoS Vulnerability in User Profile Lookup AP -
CVE-2025-61777
FlagForge Allows Unauthenticated Badge Template API Access -
CVE-2025-59932
FlagForgeCTF Unauthenticated Resource Modification/Deletion -
CVE-2025-59843
FlagForgeCTF Exposes User Emails via Public /api/user/[usern -
CVE-2025-59841
FlagForgeCTF's Improper Session Handling Allows Access After
Same vendor: FlagForgeCTF
-
CVE-2026-21868
Flag Forge has ReDoS Vulnerability in User Profile Lookup AP -
CVE-2025-61777
FlagForge Allows Unauthenticated Badge Template API Access -
CVE-2025-59932
FlagForgeCTF Unauthenticated Resource Modification/Deletion -
CVE-2025-59843
FlagForgeCTF Exposes User Emails via Public /api/user/[usern -
CVE-2025-59841
FlagForgeCTF's Improper Session Handling Allows Access After
Same weakness: CWE-862
-
CVE-2026-104660
Missing Authorization in hMailServer -
CVE-2026-87669
Brocade Fabric OS <10.0.1 REST API越权漏洞 -
CVE-2026-76272
Missing Access Control through the REST API in Splunk Secure -
CVE-2026-107352
Missing authorization checks in Amazon Athena engine version -
CVE-2026-96335
WordPress Forminator plugin <= 1.57.2 - Broken Access Contro
V. Comments for CVE-2025-59826
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