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Linux Distros Unpatched Vulnerability : CVE-2026-110306

medium Nessus Plugin ID 367761

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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.

 - fast-uri is a dependency-free RFC 3986 URI parser and serializer for Node.js. In versions before 2.4.8, from 3.0.0 through 3.1.8, and from 4.0.0 through 4.2.2, fast-uri percent-decodes the scheme component with the legacy global unescape() function before validating it, so an input whose decoded scheme is a dangerous token is emitted as a live scheme even though RFC 3986 does not allow percent-encoding in a scheme and no other parser accepts it. An application that screens dangerous schemes on the raw input and then stores or renders the normalized or resolved result can turn an inert string into an executable javascript, data, or vbscript URL, producing a stored or reflected cross-site scripting vector, and the equal() comparison treats an encoded and a plain scheme as the same, which can bypass equality-based allowlists. The issue is fixed in fast-uri 2.4.8, 3.1.9, and 4.2.3, and users should upgrade to one of these versions or later. As a workaround, reject input whose scheme part contains a percent sign, or check the parsed scheme against an allowlist after normalization and use that same parsed result rather than the raw string. (CVE-2026-110306)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-110306

Plugin Details

Severity: Medium

ID: 367761

File Name: unpatched_CVE_2026_110306.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 10/20/2026

Updated: 10/20/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 10.25

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-110306

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.6

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:aspnetcore-runtime-8.0, p-cpe:/a:centos:centos:aspnetcore-runtime-dbg-8.0, p-cpe:/a:centos:centos:aspnetcore-targeting-pack-8.0, p-cpe:/a:centos:centos:cockpit-image-builder, p-cpe:/a:centos:centos:dotnet-apphost-pack-8.0, p-cpe:/a:centos:centos:dotnet-host, p-cpe:/a:centos:centos:dotnet-hostfxr-8.0, p-cpe:/a:centos:centos:dotnet-runtime-8.0, p-cpe:/a:centos:centos:dotnet-runtime-dbg-8.0, p-cpe:/a:centos:centos:dotnet-sdk-8.0-source-built-artifacts, p-cpe:/a:centos:centos:dotnet-sdk-8.0, p-cpe:/a:centos:centos:dotnet-sdk-dbg-8.0, p-cpe:/a:centos:centos:dotnet-targeting-pack-8.0, p-cpe:/a:centos:centos:dotnet-templates-8.0, p-cpe:/a:centos:centos:dotnet8.0, p-cpe:/a:centos:centos:dotnet, p-cpe:/a:centos:centos:grafana-pcp, p-cpe:/a:centos:centos:grafana-selinux, p-cpe:/a:centos:centos:grafana, p-cpe:/a:centos:centos:linux-sgx, p-cpe:/a:centos:centos:netstandard-targeting-pack-2.1, p-cpe:/a:centos:centos:sgx-common, p-cpe:/a:centos:centos:sgx-libs, p-cpe:/a:centos:centos:sgx-mpa, p-cpe:/a:centos:centos:sgx-pccs-admin, p-cpe:/a:centos:centos:sgx-pccs, p-cpe:/a:centos:centos:sgx-pckid-tool, p-cpe:/a:centos:centos:tdx-qgs, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-8.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-runtime-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:aspnetcore-targeting-pack-8.0, p-cpe:/a:redhat:enterprise_linux:cockpit-image-builder, p-cpe:/a:redhat:enterprise_linux:dotnet-apphost-pack-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-host, p-cpe:/a:redhat:enterprise_linux:dotnet-hostfxr-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-runtime-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-8.0-source-built-artifacts, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-sdk-dbg-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-targeting-pack-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet-templates-8.0, p-cpe:/a:redhat:enterprise_linux:dotnet8.0, p-cpe:/a:redhat:enterprise_linux:dotnet, p-cpe:/a:redhat:enterprise_linux:grafana-pcp, p-cpe:/a:redhat:enterprise_linux:grafana-selinux, p-cpe:/a:redhat:enterprise_linux:grafana, p-cpe:/a:redhat:enterprise_linux:linux-sgx, p-cpe:/a:redhat:enterprise_linux:netstandard-targeting-pack-2.1, p-cpe:/a:redhat:enterprise_linux:sgx-common, p-cpe:/a:redhat:enterprise_linux:sgx-libs, p-cpe:/a:redhat:enterprise_linux:sgx-mpa, p-cpe:/a:redhat:enterprise_linux:sgx-pccs-admin, p-cpe:/a:redhat:enterprise_linux:sgx-pccs, p-cpe:/a:redhat:enterprise_linux:sgx-pckid-tool, p-cpe:/a:redhat:enterprise_linux:tdx-qgs

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/20/2026

Reference Information

CVE: CVE-2026-110306