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CVE-2025-61777— FlagForge Allows Unauthenticated Badge Template API Access

Quick assessment

Affected
FlagForgeCTF flagForge
Exploitation
Public or AI PoC available; prioritize validation
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 2.0.0版本至2.3.2之前版本存在访问控制错误漏洞，该漏洞源于/api/admin/badge-templates和/api/admin/badge-templates/create端点缺少身份验证和授权检查，可能导致数据泄露和数据库污染。

CVSS 9.4 · Critical EPSS 0.45% · P37
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I. Basic Information for CVE-2025-61777

Vulnerability Information
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Vulnerability Title
FlagForge Allows Unauthenticated Badge Template API Access
Source: CVE Program / CVE List V5
Vulnerability Description
Flag Forge is a Capture The Flag (CTF) platform. Starting in version 2.0.0 and prior to version 2.3.2, the `/api/admin/badge-templates` (GET) and `/api/admin/badge-templates/create` (POST) endpoints previously allowed access without authentication or authorization. This could have enabled unauthorized users to retrieve all badge templates and sensitive metadata (createdBy, createdAt, updatedAt) and/or create arbitrary badge templates in the database. This could lead to data exposure, database pollution, or abuse of the badge system. The issue has been fixed in FlagForge v2.3.2. GET, POST, UPDATE, and DELETE endpoints now require authentication. Authorization checks ensure only admins can access and modify badge templates. No reliable workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Flag Forge 访问控制错误漏洞
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 2.0.0版本至2.3.2之前版本存在访问控制错误漏洞，该漏洞源于/api/admin/badge-templates和/api/admin/badge-templates/create端点缺少身份验证和授权检查，可能导致数据泄露和数据库污染。
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)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
FlagForgeCTF flagForge >= 2.0.0, < 2.3.2 -

II. Public POCs for CVE-2025-61777

# POC Description Source Link Shenlong Link
1 CVE on FlagForgeCTF on versions v2.0.0 to v2.3.1. Upgraded to version 2.3.2 to fix the issue. https://github.com/0x0w1z/CVE-2025-61777 POC Details
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Qwen3.6-35B-A3B · 8079 chars
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III. Intelligence Information for CVE-2025-61777

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Vendor Advisories for CVE-2025-61777 (1)

IV. Related Vulnerabilities

Same product: flagForge
Same vendor: FlagForgeCTF
Same weakness: CWE-200

V. Comments for CVE-2025-61777

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