GHSA-r9hx-vwmv-q579

pypa/setuptools vulnerable to Regular Expression Denial of Service (ReDoS)

At a glance

Published: 2022-12-23 00:30 UTC
Updated: 2026-08-07 08:12 UTC
CVE: CVE-2022-40897
Aliases: BIT-setuptools-2022-40897, PYSEC-2022-43012
CVSS_V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS_V4: 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

Description

Python Packaging Authority (PyPA)'s setuptools is a library designed to facilitate packaging Python projects. Setuptools version 65.5.0 and earlier could allow remote attackers to cause a denial of service by fetching malicious HTML from a PyPI package or custom PackageIndex page due to a vulnerable Regular Expression in `package_index`. This has been patched in version 65.5.1.

Affected packages

Package	Versions
PyPI · setuptools	introduced 0, fixed 65.5.1

References

https://nvd.nist.gov/vuln/detail/CVE-2022-40897 ADVISORY
https://github.com/pypa/setuptools/issues/3659 WEB
https://github.com/pypa/setuptools/commit/43a9c9bfa6aa626ec2a22540bea28d2ca77964be WEB
https://setuptools.pypa.io/en/latest WEB
https://security.netapp.com/advisory/ntap-20240621-0006 WEB
https://security.netapp.com/advisory/ntap-20230214-0001 WEB
https://pyup.io/vulnerabilities/CVE-2022-40897/52495 WEB
https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YNA2BAH2ACBZ4TVJZKFLCR7L23BG5C3H WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ADES3NLOE5QJKBLGNZNI2RGVOSQXA37R WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YNA2BAH2ACBZ4TVJZKFLCR7L23BG5C3H WEB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ADES3NLOE5QJKBLGNZNI2RGVOSQXA37R WEB
https://lists.debian.org/debian-lts-announce/2024/09/msg00018.html WEB
https://github.com/pypa/setuptools/compare/v65.5.0...v65.5.1 WEB
https://github.com/pypa/setuptools/blob/fe8a98e696241487ba6ac9f91faa38ade939ec5d/setuptools/package_index.py#L200 WEB
https://github.com/pypa/setuptools PACKAGE
https://github.com/pypa/advisory-database/tree/main/vulns/setuptools/PYSEC-2022-43012.yaml WEB

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — GitHub Advisory Database