Linux Distros Unpatched Vulnerability : CVE-2026-1467

medium Nessus Plugin ID 296742

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- A flaw was found in libsoup, an HTTP client library. This vulnerability, known as CRLF (Carriage Return Line Feed) Injection, occurs when an HTTP proxy is configured and the library improperly handles URL- decoded input used to create the Host header. A remote attacker can exploit this by providing a specially crafted URL containing CRLF sequences, allowing them to inject additional HTTP headers or complete HTTP request bodies. This can lead to unintended or unauthorized HTTP requests being forwarded by the proxy, potentially impacting downstream services. (CVE-2026-1467)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Medium

ID: 296742

File Name: unpatched_CVE_2026_1467.nasl

Version: 1.8

Type: local

Agent: unix

Family: Misc.

Published: 1/27/2026

Updated: 2/11/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2026-1467

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:centos:centos:libsoup, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:libsoup3-doc, cpe:/o:debian:debian_linux:12.0, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:debian:debian_linux:libsoup3, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:centos:centos:libsoup3-devel, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:libsoup-devel, p-cpe:/a:redhat:enterprise_linux:libsoup, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:redhat:enterprise_linux:libsoup3, p-cpe:/a:canonical:ubuntu_linux:libsoup2.4, p-cpe:/a:redhat:enterprise_linux:libsoup3-devel, cpe:/o:centos:centos:7, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:libsoup3-doc, p-cpe:/a:redhat:enterprise_linux:libsoup-devel, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:centos:centos:libsoup3, p-cpe:/a:debian:debian_linux:libsoup2.4

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2026-1467

Detections

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