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Linux Distros Unpatched Vulnerability : CVE-2026-109841

medium Nessus Plugin ID 366346

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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.

 - undici is an HTTP client library for Node.js. In versions 7.15.0 through 7.30.0 and 8.0.0 through 8.12.1, its fetch() implementation verifies Subresource Integrity metadata by matching the algorithm token against a lowercase-only set, even though the SRI specification defines the token by its ASCII-lowercase form, so a valid but non-lowercase token such as an uppercase or mixed-case SHA256 is treated as unknown and skipped. When no recognized algorithm remains, undici treats the integrity list as empty and accepts the response, so a server returning a body that does not match the pinned digest passes the check. An attacker who controls only the response body can therefore deliver attacker-controlled bytes to an application that pinned a valid uppercase or mixed-case SRI token, with no integrity error, affecting response integrity only. The issue is fixed in undici 7.30.1 and 8.12.2, which normalize the algorithm token to ASCII lowercase before validation, and users should upgrade to one of those versions or later. As a workaround, use lowercase algorithm tokens such as sha256, sha384, or sha512 in integrity metadata. (CVE-2026-109841)

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-2026-109841

https://security-tracker.debian.org/tracker/CVE-2026-109841

Plugin Details

Severity: Medium

ID: 366346

File Name: unpatched_CVE_2026_109841.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 10/16/2026

Updated: 10/16/2026

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: 3

Percentile: 23.69

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.4

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

CVSS Score Source: CVE-2026-109841

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.4

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

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

Vulnerability Information

CPE: cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:grafana-selinux, p-cpe:/a:centos:centos:grafana, p-cpe:/a:centos:centos:nodejs-devel, p-cpe:/a:centos:centos:nodejs-docs, p-cpe:/a:centos:centos:nodejs-full-i18n, p-cpe:/a:centos:centos:nodejs-libs, p-cpe:/a:centos:centos:nodejs-nodemon, p-cpe:/a:centos:centos:nodejs-npm, p-cpe:/a:centos:centos:nodejs-packaging-bundler, p-cpe:/a:centos:centos:nodejs-packaging, p-cpe:/a:centos:centos:nodejs22, p-cpe:/a:centos:centos:nodejs24-devel, p-cpe:/a:centos:centos:nodejs24-docs, p-cpe:/a:centos:centos:nodejs24-full-i18n, p-cpe:/a:centos:centos:nodejs24-libs, p-cpe:/a:centos:centos:nodejs24-npm, p-cpe:/a:centos:centos:nodejs24, p-cpe:/a:centos:centos:nodejs26, p-cpe:/a:centos:centos:nodejs, p-cpe:/a:centos:centos:npm, p-cpe:/a:centos:centos:v8-12.4-devel, p-cpe:/a:centos:centos:v8-13.6-devel, p-cpe:/a:debian:debian_linux:node-undici, p-cpe:/a:redhat:enterprise_linux:grafana-selinux, p-cpe:/a:redhat:enterprise_linux:grafana, p-cpe:/a:redhat:enterprise_linux:nodejs-devel, p-cpe:/a:redhat:enterprise_linux:nodejs-docs, p-cpe:/a:redhat:enterprise_linux:nodejs-full-i18n, p-cpe:/a:redhat:enterprise_linux:nodejs-libs, p-cpe:/a:redhat:enterprise_linux:nodejs-nodemon, p-cpe:/a:redhat:enterprise_linux:nodejs-npm, p-cpe:/a:redhat:enterprise_linux:nodejs-packaging-bundler, p-cpe:/a:redhat:enterprise_linux:nodejs-packaging, p-cpe:/a:redhat:enterprise_linux:nodejs22, p-cpe:/a:redhat:enterprise_linux:nodejs24-devel, p-cpe:/a:redhat:enterprise_linux:nodejs24-docs, p-cpe:/a:redhat:enterprise_linux:nodejs24-full-i18n, p-cpe:/a:redhat:enterprise_linux:nodejs24-libs, p-cpe:/a:redhat:enterprise_linux:nodejs24-npm, p-cpe:/a:redhat:enterprise_linux:nodejs24, p-cpe:/a:redhat:enterprise_linux:nodejs26, p-cpe:/a:redhat:enterprise_linux:nodejs, p-cpe:/a:redhat:enterprise_linux:npm, p-cpe:/a:redhat:enterprise_linux:v8-12.4-devel, p-cpe:/a:redhat:enterprise_linux:v8-13.6-devel

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: 10/15/2026

Reference Information

CVE: CVE-2026-109841