Description
User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.
Published: 2026-01-20
Score: 6 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4455-1 python3.9 security update
Ubuntu USN Ubuntu USN USN-8018-1 Python vulnerabilities
Ubuntu USN Ubuntu USN USN-8018-3 Python 2.7 vulnerabilities
History

Mon, 26 Jan 2026 14:45:00 +0000


Fri, 23 Jan 2026 16:45:00 +0000


Thu, 22 Jan 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N'}

threat_severity

Moderate


Wed, 21 Jan 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 21 Jan 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Python
Python cpython
Vendors & Products Python
Python cpython

Tue, 20 Jan 2026 22:45:00 +0000


Tue, 20 Jan 2026 21:45:00 +0000

Type Values Removed Values Added
Description User-controlled data URLs parsed by urllib.request.DataHandler allow injecting headers through newlines in the data URL mediatype.
Title Header injection via newlines in data URL mediatype
Weaknesses CWE-93
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: PSF

Published:

Updated: 2026-03-03T14:42:00.488Z

Reserved: 2025-12-29T21:04:54.816Z

Link: CVE-2025-15282

cve-icon Vulnrichment

Updated: 2026-01-21T15:48:37.269Z

cve-icon NVD

Status : Deferred

Published: 2026-01-20T22:15:50.883

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-15282

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-01-20T21:35:13Z

Links: CVE-2025-15282 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-01-21T11:18:37Z

Weaknesses