CVE & CISA-KEV CatalogNVD
CVE-2022-45061
HIGHEPSS 84th pctl7.5
CVSS v3
Description
An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name being presented to the decoder could lead to a CPU denial of service. Hostnames are often supplied by remote servers that could be controlled by a malicious actor; in such a scenario, they could trigger excessive CPU consumption on the client attempting to make use of an attacker-supplied supposed hostname. For example, the attack payload could be placed in the Location header of an HTTP response with status code 302. A fix is planned in 3.11.1, 3.10.9, 3.9.16, 3.8.16, and 3.7.16.
How to fix
Remediation Available
pypy3Debian
Fixed in:7.3.5+dfsg-2+deb11u4CVE-2022-45061
Fixed in:7.3.11+dfsg-1CVE-2022-45061
Fixed in:7.3.11+dfsg-1CVE-2022-45061
Fixed in:7.3.11+dfsg-1CVE-2022-45061
CythonRed Hat / RHEL
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.src::python38:3.8RHSA-2023:2763
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.src::python27:2.7RHSA-2023:2860
CythonRocky
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.src::python38:3.8RHSA-2023:2763
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.src::python27:2.7RHSA-2023:2860
Cython-0:0.29.21Red Hat / RHEL
Fixed in:5.module+el8.4.0+9822+20bf1249.src::python39-devel:3.9RHSA-2023:2764
Cython-0:0.29.21Rocky
Fixed in:5.module+el8.4.0+9822+20bf1249.src::python39-devel:3.9RHSA-2023:2764
Cython-debugsourceRed Hat / RHEL
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.x86_64::python27:2.7RHSA-2023:2860
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.s390x::python27:2.7RHSA-2023:2860
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.ppc64le::python38:3.8RHSA-2023:2763
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.s390x::python38:3.8RHSA-2023:2763
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.x86_64::python38:3.8RHSA-2023:2763
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.aarch64::python38:3.8RHSA-2023:2763
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.ppc64le::python27:2.7RHSA-2023:2860
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.aarch64::python27:2.7RHSA-2023:2860
Cython-debugsourceRocky
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.aarch64::python27:2.7RHSA-2023:2860
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.ppc64le::python27:2.7RHSA-2023:2860
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.x86_64::python38:3.8RHSA-2023:2763
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.x86_64::python27:2.7RHSA-2023:2860
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.s390x::python38:3.8RHSA-2023:2763
Fixed in:0:0.28.1-7.module+el8.1.0+3111+de3f2d8e.s390x::python27:2.7RHSA-2023:2860
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.aarch64::python38:3.8RHSA-2023:2763
Fixed in:0:0.29.14-4.module+el8.4.0+8888+89bc7e79.ppc64le::python38:3.8RHSA-2023:2763
Cython-debugsource-0:0.29.21Red Hat / RHEL
Fixed in:5.module+el8.4.0+9822+20bf1249.aarch64::python39-devel:3.9RHSA-2023:2764
Fixed in:5.module+el8.4.0+9822+20bf1249.x86_64::python39-devel:3.9RHSA-2023:2764
Fixed in:5.module+el8.4.0+9822+20bf1249.ppc64le::python39-devel:3.9RHSA-2023:2764
Fixed in:5.module+el8.4.0+9822+20bf1249.s390x::python39-devel:3.9RHSA-2023:2764
Cython-debugsource-0:0.29.21Rocky
Fixed in:5.module+el8.4.0+9822+20bf1249.s390x::python39-devel:3.9RHSA-2023:2764
Fixed in:5.module+el8.4.0+9822+20bf1249.x86_64::python39-devel:3.9RHSA-2023:2764
Fixed in:5.module+el8.4.0+9822+20bf1249.aarch64::python39-devel:3.9RHSA-2023:2764
Fixed in:5.module+el8.4.0+9822+20bf1249.ppc64le::python39-devel:3.9RHSA-2023:2764
PyYAMLRed Hat / RHEL
Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.src::python39:3.9RHSA-2023:2764
Fixed in:0:3.12-16.module+el8.1.0+3111+de3f2d8e.src::python27:2.7RHSA-2023:2860
Fixed in:0:5.4.1-1.module+el8.5.0+10721+14d8e0d5.src::python38:3.8RHSA-2023:2763
PyYAMLRocky
Fixed in:0:3.12-16.module+el8.1.0+3111+de3f2d8e.src::python27:2.7RHSA-2023:2860
Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.src::python39:3.9RHSA-2023:2764
Fixed in:0:5.4.1-1.module+el8.5.0+10721+14d8e0d5.src::python38:3.8RHSA-2023:2763
PyYAML-debugsourceRocky
Fixed in:0:5.4.1-1.module+el8.5.0+10721+14d8e0d5.x86_64::python38:3.8RHSA-2023:2763
Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.s390x::python39:3.9RHSA-2023:2764
Fixed in:0:5.4.1-1.module+el8.5.0+10721+14d8e0d5.ppc64le::python38:3.8RHSA-2023:2763
Fixed in:0:3.12-16.module+el8.1.0+3111+de3f2d8e.x86_64::python27:2.7RHSA-2023:2860
Fixed in:0:5.4.1-1.module+el8.5.0+10721+14d8e0d5.s390x::python38:3.8RHSA-2023:2763
Fixed in:0:3.12-16.module+el8.1.0+3111+de3f2d8e.ppc64le::python27:2.7RHSA-2023:2860
Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.ppc64le::python39:3.9RHSA-2023:2764
Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.x86_64::python39:3.9RHSA-2023:2764
PyYAML-debugsourceRed Hat / RHEL
Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.x86_64::python39:3.9RHSA-2023:2764
Fixed in:0:5.4.1-1.module+el8.5.0+10721+14d8e0d5.s390x::python38:3.8RHSA-2023:2763
Fixed in:0:3.12-16.module+el8.1.0+3111+de3f2d8e.aarch64::python27:2.7RHSA-2023:2860
Fixed in:0:5.4.1-1.module+el8.5.0+10721+14d8e0d5.x86_64::python38:3.8RHSA-2023:2763
Fixed in:0:5.4.1-1.module+el8.5.0+10613+59a13ec4.aarch64::python39:3.9RHSA-2023:2764
Fixed in:0:3.12-16.module+el8.1.0+3111+de3f2d8e.x86_64::python27:2.7RHSA-2023:2860
Fixed in:0:5.4.1-1.module+el8.5.0+10721+14d8e0d5.aarch64::python38:3.8RHSA-2023:2763
Fixed in:0:3.12-16.module+el8.1.0+3111+de3f2d8e.ppc64le::python27:2.7RHSA-2023:2860
babelRocky
Fixed in:0:2.7.0-11.module+el8.5.0+11015+9c1c7c42.src::python38:3.8RHSA-2023:2763
Fixed in:0:2.5.1-10.module+el8.5.0+11014+88fc0d0b.src::python27:2.7RHSA-2023:2860
Fixed in:0:2.5.1-10.module+el8.5.0+11014+88fc0d0b.noarch::python27:2.7RHSA-2023:2860
babelRed Hat / RHEL
Fixed in:0:2.5.1-10.module+el8.5.0+11014+88fc0d0b.src::python27:2.7RHSA-2023:2860
Fixed in:0:2.7.0-11.module+el8.5.0+11015+9c1c7c42.src::python38:3.8RHSA-2023:2763
Fixed in:0:2.5.1-10.module+el8.5.0+11014+88fc0d0b.noarch::python27:2.7RHSA-2023:2860
mod_wsgiRed Hat / RHEL
Fixed in:0:4.7.1-5.module+el8.7.0+16654+645aad7f.src::python39:3.9RHSA-2023:2764
Fixed in:0:4.6.8-4.module+el8.7.0+16653+23ccaf52.src::python38:3.8RHSA-2023:2763
mod_wsgiRocky
Fixed in:0:4.7.1-5.module+el8.7.0+16654+645aad7f.src::python39:3.9RHSA-2023:2764
Fixed in:0:4.6.8-4.module+el8.7.0+16653+23ccaf52.src::python38:3.8RHSA-2023:2763
numpyRocky
Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.src::python39:3.9RHSA-2023:2764
Fixed in:0:1.17.3-6.module+el8.5.0+12205+a865257a.src::python38:3.8RHSA-2023:2763
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.src::python27:2.7RHSA-2023:2860
numpyRed Hat / RHEL
Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.src::python39:3.9RHSA-2023:2764
Fixed in:0:1.17.3-6.module+el8.5.0+12205+a865257a.src::python38:3.8RHSA-2023:2763
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.src::python27:2.7RHSA-2023:2860
numpy-debugsourceRocky
Fixed in:0:1.17.3-6.module+el8.5.0+12205+a865257a.aarch64::python38:3.8RHSA-2023:2763
Fixed in:0:1.17.3-6.module+el8.5.0+12205+a865257a.ppc64le::python38:3.8RHSA-2023:2763
Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.s390x::python39:3.9RHSA-2023:2764
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.s390x::python27:2.7RHSA-2023:2860
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.x86_64::python27:2.7RHSA-2023:2860
Fixed in:0:1.17.3-6.module+el8.5.0+12205+a865257a.s390x::python38:3.8RHSA-2023:2763
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.aarch64::python27:2.7RHSA-2023:2860
Fixed in:0:1.17.3-6.module+el8.5.0+12205+a865257a.x86_64::python38:3.8RHSA-2023:2763
numpy-debugsourceRed Hat / RHEL
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.x86_64::python27:2.7RHSA-2023:2860
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.aarch64::python27:2.7RHSA-2023:2860
Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.ppc64le::python39:3.9RHSA-2023:2764
Fixed in:0:1.19.4-3.module+el8.5.0+12204+54860423.aarch64::python39:3.9RHSA-2023:2764
Fixed in:0:1.17.3-6.module+el8.5.0+12205+a865257a.x86_64::python38:3.8RHSA-2023:2763
Fixed in:0:1.17.3-6.module+el8.5.0+12205+a865257a.s390x::python38:3.8RHSA-2023:2763
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.ppc64le::python27:2.7RHSA-2023:2860
Fixed in:1:1.14.2-16.module+el8.4.0+9406+221a4565.s390x::python27:2.7RHSA-2023:2860
platform-pythonRocky
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
platform-pythonRed Hat / RHEL
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
platform-python-debugRed Hat / RHEL
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
platform-python-debugRocky
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
platform-python-develRocky
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
platform-python-develRed Hat / RHEL
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
Fixed in:0:3.6.8-47.el8_6.4RHSA-2024:0430
pybind11-0:2.7.1Rocky
Fixed in:1.module+el8.6.0+12838+640e6226.src::python39-devel:3.9RHSA-2023:2764
pybind11-0:2.7.1Red Hat / RHEL
Fixed in:1.module+el8.6.0+12838+640e6226.src::python39-devel:3.9RHSA-2023:2764
pytestRed Hat / RHEL
Fixed in:0:3.4.2-13.module+el8.1.0+3111+de3f2d8e.src::python27:2.7RHSA-2023:2860
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 ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
2.52%probability of exploitation in 30 days
84thpercentile
Elevated risk: more likely to be exploited than 84% of all known CVEs.
References
Patch1
Third-Party Advisory2
Other references33
- lists.debian.org
- lists.debian.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.debian.org
- lists.debian.org
Related Vulnerabilities
Other CWE-407 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-27223 | Medium | 5.2 | 78% | - | Fix |
| CVE-2022-36021 | Medium | 5.5 | 61% | - | Fix |
| CVE-2021-33582 | High | 7.5 | 3.1% | - | Fix |
| CVE-2024-43485 | High | 7.5 | 3.1% | - | Fix |
| CVE-2024-43484 | High | 7.5 | 2.9% | - | Fix |
| CVE-2024-43483 | High | 7.5 | 2.9% | - | Fix |
Common questions
How do I fix CVE-2022-45061?
Published advisories record a fix for 640 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-2022-45061 being actively exploited?
Not that we know of. CVE-2022-45061 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 84% of all scored CVEs.
How severe is CVE-2022-45061?
CVE-2022-45061 has a CVSS v3 base score of 7.5, rated high. 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-2022-45061 affect?
Published advisories record a fix for pypy3 (Debian), Cython (Red Hat / RHEL), Cython (Rocky), Cython-0:0.29.21 (Red Hat / RHEL), and 636 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-2022-45061
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<a href="https://tridentstack.com/cve/CVE-2022-45061"><img src="https://tridentstack.com/cve/badge/CVE-2022-45061.svg" alt="CVE-2022-45061"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
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 2025-11-03.