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CVE-2024-46242

Description

An issue in the validate_email function in CTFd/utils/validators/__init__.py of CTFd 3.7.3 allows attackers to cause a Regular expression Denial of Service (ReDoS) via supplying a crafted string as e-mail address during registration.

POC

Reference

- https://gist.github.com/salvatore-abello/4f01f3fa54672febc0a492a11a26592c

Github

- https://github.com/salvatore-abello/salvatore-abello