PT-2026-3670 · Nginx+4 · Nginx+4

Seth Michael Larson · Published 2026-01-20 · Updated 2026-05-19 · CVE-2026-0865

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:C/A:N

Name of the Vulnerable Software and Affected Versions (affected versions not specified)

Description User-controlled header names and values containing newlines can allow injecting HTTP headers.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

ALSA-2026:19019

ALSA-2026:19176

ALSA-2026:2128

ALSA-2026:4168

ALSA-2026:4463

ALSA-2026:4473

ALSA-2026:4713

AZL-75032

AZL-75053

BDU:2026-07164

BIT-LIBPYTHON-2026-0865

BIT-PYTHON-2026-0865

BIT-PYTHON-MIN-2026-0865

CVE-2026-0865

ECHO-161C-5786-CB70

OESA-2026-1356

OESA-2026-1461

OESA-2026-1462

OESA-2026-1463

OPENSUSE-SU-2026:10152-1

OPENSUSE-SU-2026:10200-1

OPENSUSE-SU-2026:10206-1

OPENSUSE-SU-2026:10221-1

OPENSUSE-SU-2026:10222-1

OPENSUSE-SU-2026:10223-1

OPENSUSE-SU-2026:20254-1

PSF-2026-6

RHSA-2026:18693

RHSA-2026:18957

RHSA-2026:18958

RHSA-2026:19019

RHSA-2026:19176

RHSA-2026:2128

RHSA-2026:4168

RHSA-2026:4463

RHSA-2026:4473

RHSA-2026:4713

RHSA-2026:6253

RHSA-2026:7443

RHSA-2026:7661

RHSA-2026:8822

RHSA-2026:8824

SUSE-SU-2026:0590-1

SUSE-SU-2026:0612-1

SUSE-SU-2026:0613-1

SUSE-SU-2026:0642-1

SUSE-SU-2026:0643-1

SUSE-SU-2026:0644-1

SUSE-SU-2026:0645-1

SUSE-SU-2026:0663-1

SUSE-SU-2026:0664-1

SUSE-SU-2026:0693-1

SUSE-SU-2026:0767-1

SUSE-SU-2026:1062-1

SUSE-SU-2026:1107-1

SUSE-SU-2026:1117-1

SUSE-SU-2026:1349-1

SUSE-SU-2026:20543-1

SUSE-SU-2026:20581-1

SUSE-SU-2026:20665-1

SUSE-SU-2026:20710-1

SUSE-SU-2026:20768-1

SUSE-SU-2026:20796-1

USN-8018-1

USN-8018-2

USN-8018-3

Affected Products

Linuxmint

Red Os

Rocky Linux

Ubuntu

Nginx

References · 220

• https://github.com/python/cpython/pull/143917 · Patch
• https://github.com/python/cpython/commit/8bb044d29310bb05d15086cdaa8bf64867d61a97 · Patch
• https://github.com/python/cpython/commit/22e4d55285cee52bc4dbe061324e5f30bd4dee58 · Patch
• https://github.com/python/cpython/commit/c592227ffb48679af9845a45dbb0875d975bb219 · Patch
• https://github.com/python/cpython/commit/83ecd18779f286d872f68bfce175651e407d9fff · Patch
• https://github.com/python/cpython/commit/2f840249550e082dc351743f474ba56da10478d2 · Patch
• https://github.com/python/cpython/commit/bfba660085767f8c2d582134e9d511a85eda04cf · Patch
• https://github.com/python/cpython/commit/f7fceed79ca1bceae8dbe5ba5bc8928564da7211 · Patch
• https://github.com/python/cpython/commit/4802b96a2cde58570c24c13ef3289490980961c5 · Patch
• https://github.com/python/cpython/commit/e4846a93ac07a8ae9aa18203af0dd13d6e7a6995 · Patch
• https://github.com/python/cpython/commit/66da7bf6fe7b81e3ecc9c0a25bd47d4616c8d1a6 · Patch
• https://github.com/python/cpython/commit/23e3c0ae867cca0130e441e776c9955b9027c510 · Patch
• https://github.com/python/cpython/commit/286e3ac39984fe85a17f4ab39c64d382137aae5f · Patch
• https://mail.python.org/archives/list/[e-mail]/thread/BJ6QPHNSHJTS3A7CFV6IBMCAP2DWRVNT · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-4463.html · Vendor Advisory