CVE-2022-40897
HIGH 8.7EPSS 2.5%
Python Packaging Authority (PyPA) setuptools before 65.5.1 allows remote attackers to cause a denial of service via HTML in a crafted package or custom PackageIndex page. There is a Regular Expression Denial of Service (ReDoS) in package_index.py.
- CVSS v4.0 GitHub
- 8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:L/SI:L/SA:N - CVSS v3.1 NVD
- 5.9 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS v3.1 GitHub
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 2.50% chance of exploitation in the next 30 days, 84th percentile
- Published
- 2022-12-22
- Updated
- 2025-11-04
Proof-of-concept exploits (1)
Security advisories
- https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages
- pypa/setuptools/blob/fe8a98e696241487ba6ac9f91faa38ade939ec5d/setuptools/package_index.py…
- https://pyup.io/vulnerabilities/CVE-2022-40897/52495
- advisories/GHSA-r9hx-vwmv-q579