Description
CTFd 3.1.0 before 3.8.7 contains an information disclosure vulnerability in the /api/v1/teams list endpoint that exposes non-public team custom field values. Unauthenticated attackers can paginate GET requests to collect hidden registration data such as emails, phone numbers, and student IDs when team mode and public visibility are enabled.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| CTFd | CTFd | 3.1.0 – < 3.8.7 | 3.8.7 |
References
- Patch Commit patch
- https://github.com/CTFd/CTFd product
- https://github.com/CTFd/CTFd/blob/3.8.6/CTFd/api/v1/teams.py#L128-L131 technical-description
- https://github.com/CTFd/CTFd/blob/3.8.6/CTFd/schemas/teams.py#L336-L363 technical-description
- https://blog.ctfd.io/ctfd-3-8-7/ technical-description
- CTFd 3.8.7 Release Notes technical-description release-notes
- VulnCheck Advisory: CTFd 3.1.0 before 3.8.7 Information Disclosure via /api/v1/teams Endpoint third-party-advisory