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MEDIUM

CVE-2022-40897

CVSS v3

5.9

MEDIUM

EPSS Score

2.5 %

exploit probability, as of 2026-10-12

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • setuptoolsPyPIall versions · fixed in 65.5.1
  • setuptoolsBitnamiall versions · fixed in 65.5.1
  • babelAlmaLinux:8all versions · fixed in 2.5.1-10.module_el8.6.0+2781+fed64c13and 1 other package
  • python-sqlalchemy-docAlmaLinux:8all versions · fixed in 1.3.2-2.module_el8.6.0+2781+fed64c13
  • python2AlmaLinux:8all versions · fixed in 2.7.18-17.module_el8.10.0+3783+2756348e.almaand 6 other packages
  • python2-attrsAlmaLinux:8all versions · fixed in 17.4.0-10.module_el8.6.0+2781+fed64c13
  • python2-backportsAlmaLinux:8all versions · fixed in 1.0-16.module_el8.6.0+3162+01a09e5a
  • python2-backports-ssl_match_hostnameAlmaLinux:8all versions · fixed in 3.5.0.1-12.module_el8.6.0+2781+fed64c13

77 more package ranges on OSV.dev

Vendor advisories

  • CVE-2022-40897 Red Hat Product Security1,078 products fixed · 9 known affected

    pypa-setuptools: Regular Expression Denial of Service (ReDoS) in package_index.py

    python-setuptools.src as a component of Red Hat Enterprise Linux 6 · python-setuptools as a component of Red Hat Enterprise Linux 7 · python-setuptools.src as a component of Red Hat Enterprise Linux 7

  • RHSA-2024:6915 Red Hat Product Security339 products fixed

    Red Hat Security Advisory: python39:3.9 security update

  • RHSA-2024:4421 Red Hat Product Security229 products fixed

    Red Hat Security Advisory: python39:3.9 and python39-devel:3.9 security update

  • RHSA-2024:2987 Red Hat Product Security264 products fixed

    Red Hat Security Advisory: python27:2.7 security update

  • RHSA-2024:2985 Red Hat Product Security229 products fixed

    Red Hat Security Advisory: python39:3.9 and python39-devel:3.9 security update

  • RHSA-2023:7395 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: python-setuptools security update

3 more advisories

Full record on NVD

Description

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.

Technical details

Published
2022-12-23

Frequently asked questions

What is 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.

Is CVE-2022-40897 actively exploited?

Active exploitation of CVE-2022-40897 has not been confirmed. Its EPSS score was 2.5% on 2026-10-12, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-40897?

CVE-2022-40897 has a CVSS v3 base score of 5.9 (MEDIUM severity).

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