CVE Vulnerabilities

CVE-2026-0865

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Published: Jan 20, 2026 | Modified: Feb 13, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
4.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N
Ubuntu
MEDIUM
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User-controlled header names and values containing newlines can allow injecting HTTP headers.

Weakness

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Affected Software

NameVendorStart VersionEnd Version
Red Hat Enterprise Linux 8RedHatpython3-0:3.6.8-73.el8_10*
Red Hat Enterprise Linux 8RedHatpython3-0:3.6.8-73.el8_10*
Python3.10Ubuntujammy*
Python3.11Ubuntuesm-apps/jammy*
Python3.11Ubuntujammy*
Python3.12Ubuntunoble*
Python3.13Ubuntuquesting*
Python3.14Ubuntuquesting*
Python3.4Ubuntuesm-infra-legacy/trusty*
Python3.5Ubuntuesm-infra-legacy/trusty*
Python3.5Ubuntuesm-infra/xenial*
Python3.6Ubuntuesm-infra/bionic*
Python3.7Ubuntuesm-apps/bionic*
Python3.8Ubuntuesm-apps/bionic*
Python3.8Ubuntuesm-infra/focal*
Python3.9Ubuntuesm-apps/focal*

Potential Mitigations

References