Is CVE-2026-4224 in the CISA KEV catalog?

No. CVE-2026-4224 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-4224?

CVE-2026-4224 has a CVSS v3 base score of 7.5 (Moderate).

What is the EPSS score for CVE-2026-4224?

CVE-2026-4224 has an EPSS score of 0.62% (45th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4224?

Upgrade python-unversioned-command on rhel 10 to 0:3.12.13-2.el10_2 or later. Fixes are available for 82 affected products.

CVE & CISA-KEV Catalog

CVE-2026-4224

MEDIUM

7.5

CVSS v3

NVD

Description

When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.

CWE-674

How to fix

Remediation Available

python-unversioned-commandRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python-unversioned-commandRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3Red Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:11-main@x86_64RHSA-2026:8822

Fixed in:12-main@x86_64RHSA-2026:8824

Fixed in:12-main@srcRHSA-2026:8824

Fixed in:12-main@aarch64RHSA-2026:8824

Fixed in:11-main@srcRHSA-2026:8822

Fixed in:11-main@aarch64RHSA-2026:8822

python3Rocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:12-main@x86_64RHSA-2026:8824

Fixed in:11-main@srcRHSA-2026:8822

Fixed in:12-main@srcRHSA-2026:8824

Fixed in:12-main@aarch64RHSA-2026:8824

Fixed in:11-main@aarch64RHSA-2026:8822

Fixed in:11-main@x86_64RHSA-2026:8822

python3-debugRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-debugRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-develRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-develRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-idleRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-idleRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-libsRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-libsRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-testRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-testRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-tkinterRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3-tkinterRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

python3.12Rocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12Red Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debugRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debugRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debuginfoRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debuginfoRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debugsourceRocky

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-debugsourceRed Hat / RHEL

Fixed in:0:3.12.13-2.el10_2RHSA-2026:19064

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-develRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-develRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-idleRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-idleRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-libsRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-libsRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-rpm-macrosRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

python3.12-rpm-macrosRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

python3.12-testRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-testRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-tkinterRed Hat / RHEL

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.12-tkinterRocky

Fixed in:0:3.12.13-2.el8_10RHSA-2026:10950

Fixed in:0:3.12.13-2.el9_8RHSA-2026:19177

python3.14Rocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14Red Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-debugRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-debugRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-debuginfoRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-debuginfoRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-debugsourceRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-debugsourceRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-develRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-develRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreadingRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreadingRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-debugRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-debugRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-develRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-develRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-idleRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-idleRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-libsRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-libsRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-testRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-testRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-tkinterRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-freethreading-tkinterRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-idleRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-idleRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-libsRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-libsRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-testRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-testRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-tkinterRocky

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

python3.14-tkinterRed Hat / RHEL

Fixed in:0:3.14.4-2.el10_2RHSA-2026:19019

Fixed in:0:3.14.4-2.el9_8RHSA-2026:19176

registry.redhat.io/rhui5/cdsRocky

Fixed in:rhel9@sha256:29229a9b1908d9586aa60ae96ea4cab29316c058665ea4e10bd7d88e3434f38a_amd64RHSA-2026:21275

registry.redhat.io/rhui5/cdsRed Hat / RHEL

Fixed in:rhel9@sha256:29229a9b1908d9586aa60ae96ea4cab29316c058665ea4e10bd7d88e3434f38a_amd64RHSA-2026:21275

registry.redhat.io/rhui5/haproxyRocky

Fixed in:rhel9@sha256:eeceb83a297bdb2778a63fa0e55d441ba316b77be786280746348fdcdeae866d_amd64RHSA-2026:21275

registry.redhat.io/rhui5/haproxyRed Hat / RHEL

Fixed in:rhel9@sha256:eeceb83a297bdb2778a63fa0e55d441ba316b77be786280746348fdcdeae866d_amd64RHSA-2026:21275

registry.redhat.io/rhui5/installerRed Hat / RHEL

Fixed in:rhel9@sha256:fb8d5c681efa515095f164334fde48bb2c4160069ba7512ddbf16a865c65ae17_amd64RHSA-2026:21275

registry.redhat.io/rhui5/installerRocky

Fixed in:rhel9@sha256:fb8d5c681efa515095f164334fde48bb2c4160069ba7512ddbf16a865c65ae17_amd64RHSA-2026:21275

registry.redhat.io/rhui5/rhuaRocky

Fixed in:rhel9@sha256:ae3724c290b6e0c536cadae4dbe38fc1241fb88520db381e04bfbd1e489989e8_amd64RHSA-2026:21275

registry.redhat.io/rhui5/rhuaRed Hat / RHEL

Fixed in:rhel9@sha256:ae3724c290b6e0c536cadae4dbe38fc1241fb88520db381e04bfbd1e489989e8_amd64RHSA-2026:21275

Python 2Windows application

Affected:3.13.0 3.13.13Fixed in:3.13.13Python Software Foundation

Affected:3.10.0Fixed in:3.10.0Python Software Foundation

Affected:3.14.0 3.14.4Fixed in:3.14.4Python Software Foundation

Python 3.10Windows application

Affected:3.13.0 3.13.13Fixed in:3.13.13Python Software Foundation

Affected:3.10.0Fixed in:3.10.0Python Software Foundation

Affected:3.14.0 3.14.4Fixed in:3.14.4Python Software Foundation

Python 3.11Windows application

Affected:3.10.0Fixed in:3.10.0Python Software Foundation

Affected:3.13.0 3.13.13Fixed in:3.13.13Python Software Foundation

Affected:3.14.0 3.14.4Fixed in:3.14.4Python Software Foundation

Python 3.12Windows application

Affected:3.14.0 3.14.4Fixed in:3.14.4Python Software Foundation

Affected:3.10.0Fixed in:3.10.0Python Software Foundation

Affected:3.13.0 3.13.13Fixed in:3.13.13Python Software Foundation

Python 3.8Windows application

Affected:3.13.0 3.13.13Fixed in:3.13.13Python Software Foundation

Affected:3.14.0 3.14.4Fixed in:3.14.4Python Software Foundation

Affected:3.10.0Fixed in:3.10.0Python Software Foundation

Python 3.9Windows application

Affected:3.13.0 3.13.13Fixed in:3.13.13Python Software Foundation

Affected:3.10.0Fixed in:3.10.0Python Software Foundation

Affected:3.14.0 3.14.4Fixed in:3.14.4Python Software Foundation

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

0.62%probability of exploitation in 30 days

45thpercentile

Moderate risk: more likely to be exploited than 45% of all known CVEs.

References

Patch6

Third-Party Advisory2

Issue Tracking1

github.com

Related Vulnerabilities

Other CWE-674 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2024-25111	High	8.6	65%	-	Fix
CVE-2023-50269	High	8.6	58%	-	Fix
CVE-2021-42697	High	7.5	36%	-	Fix
CVE-2018-0739	Medium	6.5	19%	-	Fix
CVE-2007-1285	High	7.5	18%	-	Fix

Embed a live status badge for CVE-2026-4224

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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 2026-06-04.