CVE-2022-40897

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.

• CWE-1333
• CWE-1333

• https://github.com/pypa/setuptools/blob/fe8a98e696241487ba6ac9f91faa38ade939ec5d/setuptools/package_index.py#L200Third Party Advisory
• https://github.com/pypa/setuptools/commit/43a9c9bfa6aa626ec2a22540bea28d2ca77964bePatch, Third Party Advisory
• https://github.com/pypa/setuptools/compare/v65.5.0...v65.5.1Release Notes, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ADES3NLOE5QJKBLGNZNI2RGVOSQXA37R/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YNA2BAH2ACBZ4TVJZKFLCR7L23BG5C3H/
• https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/Exploit, Patch, Technical Description, Vendor Advisory
• https://pyup.io/vulnerabilities/CVE-2022-40897/52495/Third Party Advisory
• https://security.netapp.com/advisory/ntap-20230214-0001/
• https://security.netapp.com/advisory/ntap-20240621-0006/
• https://github.com/pypa/setuptools/blob/fe8a98e696241487ba6ac9f91faa38ade939ec5d/setuptools/package_index.py#L200Third Party Advisory
• https://github.com/pypa/setuptools/commit/43a9c9bfa6aa626ec2a22540bea28d2ca77964bePatch, Third Party Advisory
• https://github.com/pypa/setuptools/compare/v65.5.0...v65.5.1Release Notes, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2024/09/msg00018.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ADES3NLOE5QJKBLGNZNI2RGVOSQXA37R/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YNA2BAH2ACBZ4TVJZKFLCR7L23BG5C3H/
• https://pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages/Exploit, Patch, Technical Description, Vendor Advisory
• https://pyup.io/vulnerabilities/CVE-2022-40897/52495/Third Party Advisory
• https://security.netapp.com/advisory/ntap-20230214-0001/
• https://security.netapp.com/advisory/ntap-20240621-0006/

Published

Dec 23, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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