CVE & CISA-KEV Catalog

CVE-2022-40897

MEDIUMEPSS 85th pctl

5.9

CVSS v3

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.

How to fix

Remediation Available

setuptoolsDebian

Fixed in:65.6.3-1CVE-2022-40897

Fixed in:65.6.3-1CVE-2022-40897

Fixed in:65.6.3-1CVE-2022-40897

CythonRocky

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

CythonRed Hat / RHEL

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

Cython-0:0.29.21Red Hat / RHEL

Fixed in:5.module+el8.4.0+9822+20bf1249.src::python39-devel:3.9RHSA-2024:4421

Fixed in:5.module+el8.9.0+19644+d68f775d.src::python39-devel:3.9RHSA-2024:2985

Cython-0:0.29.21Rocky

Fixed in:5.module+el8.9.0+19644+d68f775d.src::python39-devel:3.9RHSA-2024:2985

Fixed in:5.module+el8.4.0+9822+20bf1249.src::python39-devel:3.9RHSA-2024:4421

Cython-debugsourceRed Hat / RHEL

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.x86_64::python27:2.7RHSA-2024:2987

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.s390x::python27:2.7RHSA-2024:2987

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.aarch64::python27:2.7RHSA-2024:2987

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.ppc64le::python27:2.7RHSA-2024:2987

Cython-debugsourceRocky

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.s390x::python27:2.7RHSA-2024:2987

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.x86_64::python27:2.7RHSA-2024:2987

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.ppc64le::python27:2.7RHSA-2024:2987

Fixed in:0:0.28.1-7.module+el8.9.0+19487+7dc18407.aarch64::python27:2.7RHSA-2024:2987

Cython-debugsource-0:0.29.21Rocky

Fixed in:5.module+el8.9.0+19644+d68f775d.x86_64::python39-devel:3.9RHSA-2024:2985

Fixed in:5.module+el8.9.0+19644+d68f775d.aarch64::python39-devel:3.9RHSA-2024:2985

Fixed in:5.module+el8.4.0+9822+20bf1249.s390x::python39-devel:3.9RHSA-2024:4421

Fixed in:5.module+el8.4.0+9822+20bf1249.aarch64::python39-devel:3.9RHSA-2024:4421

Fixed in:5.module+el8.9.0+19644+d68f775d.s390x::python39-devel:3.9RHSA-2024:2985

Fixed in:5.module+el8.4.0+9822+20bf1249.ppc64le::python39-devel:3.9RHSA-2024:4421

Fixed in:5.module+el8.4.0+9822+20bf1249.x86_64::python39-devel:3.9RHSA-2024:4421

Fixed in:5.module+el8.9.0+19644+d68f775d.ppc64le::python39-devel:3.9RHSA-2024:2985

Cython-debugsource-0:0.29.21Red Hat / RHEL

Fixed in:5.module+el8.4.0+9822+20bf1249.aarch64::python39-devel:3.9RHSA-2024:4421

Fixed in:5.module+el8.4.0+9822+20bf1249.s390x::python39-devel:3.9RHSA-2024:4421

Fixed in:5.module+el8.4.0+9822+20bf1249.ppc64le::python39-devel:3.9RHSA-2024:4421

Fixed in:5.module+el8.9.0+19644+d68f775d.aarch64::python39-devel:3.9RHSA-2024:2985

Fixed in:5.module+el8.9.0+19644+d68f775d.ppc64le::python39-devel:3.9RHSA-2024:2985

Fixed in:5.module+el8.9.0+19644+d68f775d.s390x::python39-devel:3.9RHSA-2024:2985

Fixed in:5.module+el8.9.0+19644+d68f775d.x86_64::python39-devel:3.9RHSA-2024:2985

Fixed in:5.module+el8.4.0+9822+20bf1249.x86_64::python39-devel:3.9RHSA-2024:4421

PyYAMLRed Hat / RHEL

Fixed in:0:3.12-16.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.src::python39:3.9RHSA-2024:4421

Fixed in:0:5.4.1-1.module+el8.9.0+19644+d68f775d.src::python39:3.9RHSA-2024:2985

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.src::python39:3.9RHSA-2024:6915

PyYAMLRocky

Fixed in:0:3.12-16.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

Fixed in:0:5.4.1-1.module+el8.9.0+19644+d68f775d.src::python39:3.9RHSA-2024:2985

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.src::python39:3.9RHSA-2024:6915

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.src::python39:3.9RHSA-2024:4421

PyYAML-debugsourceRed Hat / RHEL

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.x86_64::python39:3.9RHSA-2024:4421

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.s390x::python39:3.9RHSA-2024:6915

Fixed in:0:3.12-16.module+el8.9.0+19487+7dc18407.aarch64::python27:2.7RHSA-2024:2987

Fixed in:0:3.12-16.module+el8.9.0+19487+7dc18407.ppc64le::python27:2.7RHSA-2024:2987

Fixed in:0:3.12-16.module+el8.9.0+19487+7dc18407.s390x::python27:2.7RHSA-2024:2987

Fixed in:0:3.12-16.module+el8.9.0+19487+7dc18407.x86_64::python27:2.7RHSA-2024:2987

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.aarch64::python39:3.9RHSA-2024:4421

Fixed in:0:5.4.1-1.module+el8.9.0+19644+d68f775d.x86_64::python39:3.9RHSA-2024:2985

PyYAML-debugsourceRocky

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.aarch64::python39:3.9RHSA-2024:6915

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.x86_64::python39:3.9RHSA-2024:6915

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.x86_64::python39:3.9RHSA-2024:4421

Fixed in:0:5.4.1-1.module+el8.9.0+19644+d68f775d.x86_64::python39:3.9RHSA-2024:2985

Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.ppc64le::python39:3.9RHSA-2024:4421

Fixed in:0:5.4.1-1.module+el8.9.0+19644+d68f775d.s390x::python39:3.9RHSA-2024:2985

Fixed in:0:5.4.1-1.module+el8.9.0+19644+d68f775d.ppc64le::python39:3.9RHSA-2024:2985

Fixed in:0:5.4.1-1.module+el8.9.0+19644+d68f775d.aarch64::python39:3.9RHSA-2024:2985

babelRocky

Fixed in:0:2.5.1-10.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

Fixed in:0:2.5.1-10.module+el8.9.0+19487+7dc18407.noarch::python27:2.7RHSA-2024:2987

babelRed Hat / RHEL

Fixed in:0:2.5.1-10.module+el8.9.0+19487+7dc18407.noarch::python27:2.7RHSA-2024:2987

Fixed in:0:2.5.1-10.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

mod_wsgiRocky

Fixed in:0:4.7.1-5.module+el8.7.0+16654+645aad7f.src::python39:3.9RHSA-2024:4421

Fixed in:0:4.7.1-7.module+el8.9.0+19644+d68f775d.src::python39:3.9RHSA-2024:2985

Fixed in:0:4.7.1-4.module+el8.4.0+9822+20bf1249.src::python39:3.9RHSA-2024:6915

mod_wsgiRed Hat / RHEL

Fixed in:0:4.7.1-5.module+el8.7.0+16654+645aad7f.src::python39:3.9RHSA-2024:4421

Fixed in:0:4.7.1-4.module+el8.4.0+9822+20bf1249.src::python39:3.9RHSA-2024:6915

Fixed in:0:4.7.1-7.module+el8.9.0+19644+d68f775d.src::python39:3.9RHSA-2024:2985

numpyRocky

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.src::python39:3.9RHSA-2024:4421

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.src::python39:3.9RHSA-2024:6915

Fixed in:0:1.19.4-3.module+el8.9.0+19644+d68f775d.src::python39:3.9RHSA-2024:2985

Fixed in:1:1.14.2-16.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

numpyRed Hat / RHEL

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.src::python39:3.9RHSA-2024:4421

Fixed in:0:1.19.4-3.module+el8.9.0+19644+d68f775d.src::python39:3.9RHSA-2024:2985

Fixed in:1:1.14.2-16.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.src::python39:3.9RHSA-2024:6915

numpy-debugsourceRed Hat / RHEL

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.s390x::python39:3.9RHSA-2024:4421

Fixed in:0:1.19.4-3.module+el8.9.0+19644+d68f775d.x86_64::python39:3.9RHSA-2024:2985

Fixed in:0:1.19.4-3.module+el8.9.0+19644+d68f775d.s390x::python39:3.9RHSA-2024:2985

Fixed in:0:1.19.4-3.module+el8.9.0+19644+d68f775d.ppc64le::python39:3.9RHSA-2024:2985

Fixed in:0:1.19.4-3.module+el8.9.0+19644+d68f775d.aarch64::python39:3.9RHSA-2024:2985

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.aarch64::python39:3.9RHSA-2024:6915

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.ppc64le::python39:3.9RHSA-2024:4421

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.x86_64::python39:3.9RHSA-2024:6915

numpy-debugsourceRocky

Fixed in:0:1.19.4-3.module+el8.9.0+19644+d68f775d.x86_64::python39:3.9RHSA-2024:2985

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.ppc64le::python39:3.9RHSA-2024:4421

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.x86_64::python39:3.9RHSA-2024:4421

Fixed in:1:1.14.2-16.module+el8.9.0+19487+7dc18407.aarch64::python27:2.7RHSA-2024:2987

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.ppc64le::python39:3.9RHSA-2024:6915

Fixed in:1:1.14.2-16.module+el8.9.0+19487+7dc18407.ppc64le::python27:2.7RHSA-2024:2987

Fixed in:1:1.14.2-16.module+el8.9.0+19487+7dc18407.s390x::python27:2.7RHSA-2024:2987

Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.x86_64::python39:3.9RHSA-2024:6915

platform-python-setuptoolsRed Hat / RHEL

Fixed in:0:39.2.0-7.el8_6RHSA-2023:7395

platform-python-setuptoolsRocky

Fixed in:0:39.2.0-7.el8_6RHSA-2023:7395

pybind11-0:2.7.1Rocky

Fixed in:1.module+el8.9.0+19644+d68f775d.src::python39-devel:3.9RHSA-2024:2985

Fixed in:1.module+el8.6.0+12838+640e6226.src::python39-devel:3.9RHSA-2024:4421

pybind11-0:2.7.1Red Hat / RHEL

Fixed in:1.module+el8.6.0+12838+640e6226.src::python39-devel:3.9RHSA-2024:4421

Fixed in:1.module+el8.9.0+19644+d68f775d.src::python39-devel:3.9RHSA-2024:2985

pytestRocky

Fixed in:0:3.4.2-13.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

pytestRed Hat / RHEL

Fixed in:0:3.4.2-13.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

pytest-0:6.0.2Red Hat / RHEL

Fixed in:2.module+el8.9.0+19644+d68f775d.src::python39-devel:3.9RHSA-2024:2985

Fixed in:2.module+el8.4.0+9822+20bf1249.src::python39-devel:3.9RHSA-2024:4421

pytest-0:6.0.2Rocky

Fixed in:2.module+el8.4.0+9822+20bf1249.src::python39-devel:3.9RHSA-2024:4421

Fixed in:2.module+el8.9.0+19644+d68f775d.src::python39-devel:3.9RHSA-2024:2985

python-PyMySQLRed Hat / RHEL

Fixed in:0:0.8.0-10.module+el8.9.0+19487+7dc18407.src::python27:2.7RHSA-2024:2987

Fixed in:0:0.10.1-2.module+el8.9.0+19644+d68f775d.src::python39:3.9RHSA-2024:2985

Fixed in:0:0.10.1-2.module+el8.4.0+9822+20bf1249.src::python39:3.9RHSA-2024:4421

Fixed in:0:0.10.1-2.module+el8.4.0+9822+20bf1249.src::python39:3.9RHSA-2024:6915

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.62%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch2

Third-Party Advisory3

Other references5

Related Vulnerabilities

Other CWE-1333 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-3364	High	7.5	44%	-	Fix
CVE-2024-8124	High	7.5	40%	-	Fix
CVE-2024-25126	Medium	5.3	35%	-	Fix
CVE-2024-2651	Medium	6.5	33%	-	Fix
CVE-2021-32837	High	7.5	29%	-	Fix
CVE-2024-2829	High	7.5	26%	-	Fix

Common questions

How do I fix CVE-2022-40897?

Published advisories record a fix for 463 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2022-40897 being actively exploited?

Not that we know of. CVE-2022-40897 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 85% of all scored CVEs.

How severe is CVE-2022-40897?

CVE-2022-40897 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2022-40897 affect?

Published advisories record a fix for setuptools (Debian), Cython (Rocky), Cython (Red Hat / RHEL), Cython-0:0.29.21 (Red Hat / RHEL), and 459 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2022-40897

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.