CVE-2025-59843— FlagForgeCTF Exposes User Emails via Public /api/user/[username] API
Possible ATT&CK Techniques 1AI
T1530 · Data from Cloud StorageGet alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2025-59843
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
FlagForgeCTF Exposes User Emails via Public /api/user/[username] API
Source: CVE Program / CVE List V5
Vulnerability Description
Flag Forge is a Capture The Flag (CTF) platform. From versions 2.0.0 to before 2.3.2, the public endpoint /api/user/[username] returns user email addresses in its JSON response. The fix, intended for release in 2.3.1 but only available starting in version 2.3.2, removes email addresses from public API responses while keeping the endpoint publicly accessible. Users should upgrade to version 2.3.2 or later to eliminate exposure. There are no workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
侵犯隐私
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 2.0.0版本至2.3.1之前版本存在安全漏洞，该漏洞源于公开端点/api/user/[username]返回用户电子邮件地址，可能导致信息泄露。
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 | >= 2.0.0, < 2.3.2 | - |
II. Public POCs for CVE-2025-59843
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE on FlagForge on versions 2.0.0 to 2.3.0. Upgrade to version 2.3.1 to fix the issue. | https://github.com/At0mXploit/CVE-2025-59843-CVE-2025-59932 | POC Details |
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-59843
请登录查看更多情报信息。
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-2025-59841
FlagForgeCTF's Improper Session Handling Allows Access After - CVE-2025-59833
FlagForgeCTF Hint Exposure via API
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-2025-59841
FlagForgeCTF's Improper Session Handling Allows Access After - CVE-2025-59833
FlagForgeCTF Hint Exposure via API
Same weakness: CWE-359
- CVE-2026-48048
XWiki Platform's Livetable results still allow reconstructin - CVE-2026-24078
Exposure of Private Personal Information to an Unauthorized - CVE-2026-56171
Windows Remote Desktop Protocol (RDP) Information Disclosure - CVE-2026-50657
Microsoft Defender for Endpoint for Mac Information Disclosu - CVE-2026-58297
Microsoft Edge for Android Information Disclosure Vulnerabil
V. Comments for CVE-2025-59843
No comments yet