CVE-2025-15282

UNSCORED

Description

User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.

CWE-93

How to fix

Remediation Available

pypy3Debian

Fixed in:7.3.21+dfsg-1CVE-2025-15282

python-unversioned-commandRocky

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

python-unversioned-commandRed Hat / RHEL

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

python3Rocky

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

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

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

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

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

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

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

python3Red Hat / RHEL

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

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

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

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

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

Fixed in:11-main@srcRHSA-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-tkinterRocky

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

python3.12Rocky

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-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-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-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-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-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-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-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-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-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-rpm-macrosRed Hat / RHEL

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

python3.12-rpm-macrosRocky

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-tkinterRocky

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

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

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

registry.redhat.io/rhui5/cdsRocky

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/installerRocky

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

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

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

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

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

registry.redhat.io/rhui5/rhuaRocky

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

libpython2.7Ubuntu

Fixed in:2.7.6-8ubuntu0.6+esm29USN-8018-3

Fixed in:2.7.12-1ubuntu0~16.04.18+esm19USN-8018-3

Fixed in:2.7.17-1~18.04ubuntu1.13+esm14USN-8018-3

Fixed in:2.7.18-1~20.04.7+esm9USN-8018-3

Fixed in:2.7.18-13ubuntu1.5+esm8USN-8018-3

libpython3.10Ubuntu

Fixed in:3.10.12-1~22.04.14USN-8018-1

libpython3.11Ubuntu

Fixed in:3.11.0~rc1-1~22.04.1~esm8USN-8018-1

libpython3.12t64Ubuntu

Fixed in:3.12.3-1ubuntu0.11USN-8018-1

libpython3.13Ubuntu

Fixed in:3.13.7-1ubuntu0.3USN-8018-1

libpython3.14Ubuntu

Fixed in:3.14.0-1ubuntu0.2USN-8018-1

libpython3.4Ubuntu

Fixed in:3.4.3-1ubuntu1~14.04.7+esm19USN-8018-1

libpython3.5Ubuntu

Fixed in:3.5.2-2ubuntu0~16.04.4~14.04.1+esm9USN-8018-1

Fixed in:3.5.2-2ubuntu0~16.04.13+esm21USN-8018-1

libpython3.6Ubuntu

Fixed in:3.6.9-1~18.04ubuntu1.13+esm8USN-8018-1

libpython3.7Ubuntu

Fixed in:3.7.5-2ubuntu1~18.04.2+esm9USN-8018-1

libpython3.8Ubuntu

Fixed in:3.8.0-3ubuntu1~18.04.2+esm9USN-8018-1

Fixed in:3.8.10-0ubuntu1~20.04.18+esm5USN-8018-1

libpython3.9Ubuntu

Fixed in:3.9.5-3ubuntu0~20.04.1+esm9USN-8018-1

python2.7Ubuntu

Fixed in:2.7.6-8ubuntu0.6+esm29USN-8018-3

Fixed in:2.7.12-1ubuntu0~16.04.18+esm19USN-8018-3

Fixed in:2.7.17-1~18.04ubuntu1.13+esm14USN-8018-3

Fixed in:2.7.18-1~20.04.7+esm9USN-8018-3

Fixed in:2.7.18-13ubuntu1.5+esm8USN-8018-3

python3.10Ubuntu

Fixed in:3.10.12-1~22.04.14USN-8018-1

python3.11Ubuntu

Fixed in:3.11.0~rc1-1~22.04.1~esm8USN-8018-1

python3.12Ubuntu

Fixed in:3.12.3-1ubuntu0.11USN-8018-1

python3.13Ubuntu

Fixed in:3.13.7-1ubuntu0.3USN-8018-1

python3.14Ubuntu

Fixed in:3.14.0-1ubuntu0.2USN-8018-1

python3.4Ubuntu

Fixed in:3.4.3-1ubuntu1~14.04.7+esm19USN-8018-1

python3.5Ubuntu

Fixed in:3.5.2-2ubuntu0~16.04.4~14.04.1+esm9USN-8018-1

Fixed in:3.5.2-2ubuntu0~16.04.13+esm21USN-8018-1

python3.6Ubuntu

Fixed in:3.6.9-1~18.04ubuntu1.13+esm8USN-8018-1

python3.7Ubuntu

Fixed in:3.7.5-2ubuntu1~18.04.2+esm9USN-8018-1

python3.8Ubuntu

Fixed in:3.8.0-3ubuntu1~18.04.2+esm9USN-8018-1

Fixed in:3.8.10-0ubuntu1~20.04.18+esm5USN-8018-1

python3.9Ubuntu

Fixed in:3.9.5-3ubuntu0~20.04.1+esm9USN-8018-1

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 v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.48%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Other references9

Related Vulnerabilities

Other CWE-93 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-61884	High	7.5	98%	KEV + Ransom	-
CVE-2022-0666	High	7.5	44%	-	Fix
CVE-2016-3115	Medium	6.4	37%	-	Fix
CVE-2024-20337	High	8.2	30%	-	Fix
CVE-2021-39172	High	8.8	29%	-	Fix
CVE-2016-4975	Medium	6.1	20%	-	Fix

Common questions

How do I fix CVE-2025-15282?

Published advisories record a fix for 69 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-2025-15282 being actively exploited?

Not that we know of. CVE-2025-15282 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.48% is the estimated probability that it will be exploited in the next 30 days. That is higher than 39% of all scored CVEs.

What does CVE-2025-15282 affect?

Published advisories record a fix for pypy3 (Debian), python-unversioned-command (Rocky), python-unversioned-command (Red Hat / RHEL), python3 (Rocky), and 65 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-2025-15282

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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 2026-01-26.