CVE-2025-53539
Published
CVSS v3
7.5
HIGH
CVSS v2
N/A
Affected
1
PROJECT
Description
FastAPI Guard is a security library for FastAPI that provides middleware to control IPs, log requests, and detect penetration attempts. fastapi-guard's penetration attempts detection uses regex to scan incoming requests. However, some of the regex patterns used in detection are extremely inefficient and can cause polynomial complexity backtracks when handling specially crafted inputs. This vulnerability is fixed in 3.0.1.
FastAPI Guard: A security library for FastAPI that provides middleware to control IPs, log requests, and detect penetration attempts. It integrates seamlessly with FastAPI to offer robust protection against various security threats.
GitHub