Linux Distros Unpatched Vulnerability : CVE-2026-71497

medium Nessus Plugin ID 333319

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.

- jsoup is a Java library for working with real-world HTML. From 1.14.3 until 1.23.1, jsoup's HTML parser could incorrectly handle a malformed tag name ending in a control character, causing the tag to acquire the parsing behavior of a different element. When a custom Safelist permits certain raw-text elements, this misparsing can cause content that should remain inert text to be emitted as active markup after serialization, potentially resulting in cross-site scripting. jsoup's built-in Safelists are not affected.
This issue is fixed in version 1.23.1. (CVE-2026-71497)

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: 333319

File Name: unpatched_CVE_2026_71497.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 8/7/2026

Updated: 8/7/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 9.72

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-2026-71497

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.3

Vector: CVSS:3.0/AV:N/AC:H/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:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:11.0, 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:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:jsoup, p-cpe:/a:centos:centos:aopalliance, p-cpe:/a:centos:centos:apache-commons-cli, p-cpe:/a:centos:centos:apache-commons-codec, p-cpe:/a:centos:centos:apache-commons-io, p-cpe:/a:centos:centos:atinject, p-cpe:/a:centos:centos:google-guice, p-cpe:/a:centos:centos:guava, p-cpe:/a:centos:centos:httpcomponents-client, p-cpe:/a:centos:centos:httpcomponents-core, p-cpe:/a:centos:centos:jakarta-annotations, p-cpe:/a:centos:centos:jakarta-mail-javadoc, p-cpe:/a:centos:centos:jakarta-mail, p-cpe:/a:centos:centos:jansi, p-cpe:/a:centos:centos:jcl-over-slf4j, p-cpe:/a:centos:centos:jmc, p-cpe:/a:centos:centos:jsr-305, p-cpe:/a:centos:centos:maven-lib, p-cpe:/a:centos:centos:maven-openjdk11, p-cpe:/a:centos:centos:maven-openjdk17, p-cpe:/a:centos:centos:maven-openjdk21, p-cpe:/a:centos:centos:maven-openjdk25, p-cpe:/a:centos:centos:maven-openjdk8, p-cpe:/a:centos:centos:maven-resolver, p-cpe:/a:centos:centos:maven-shared-utils, p-cpe:/a:centos:centos:maven-unbound, p-cpe:/a:centos:centos:maven-wagon-file, p-cpe:/a:centos:centos:maven-wagon-ftp, p-cpe:/a:centos:centos:maven-wagon-http-lightweight, p-cpe:/a:centos:centos:maven-wagon-http-shared, p-cpe:/a:centos:centos:maven-wagon-http, p-cpe:/a:centos:centos:maven-wagon-javadoc, p-cpe:/a:centos:centos:maven-wagon-provider-api, p-cpe:/a:centos:centos:maven-wagon-provider-test, p-cpe:/a:centos:centos:maven-wagon-providers, p-cpe:/a:centos:centos:maven-wagon-scm, p-cpe:/a:centos:centos:maven-wagon, p-cpe:/a:centos:centos:maven, p-cpe:/a:centos:centos:plexus-cipher, p-cpe:/a:centos:centos:plexus-classworlds, p-cpe:/a:centos:centos:plexus-containers-component-annotations, p-cpe:/a:centos:centos:plexus-containers, p-cpe:/a:centos:centos:plexus-interpolation, p-cpe:/a:centos:centos:plexus-sec-dispatcher, p-cpe:/a:centos:centos:plexus-utils, p-cpe:/a:centos:centos:sisu, p-cpe:/a:centos:centos:slf4j, p-cpe:/a:debian:debian_linux:jsoup, p-cpe:/a:redhat:enterprise_linux:aopalliance, p-cpe:/a:redhat:enterprise_linux:apache-commons-cli, p-cpe:/a:redhat:enterprise_linux:apache-commons-codec, p-cpe:/a:redhat:enterprise_linux:apache-commons-io, p-cpe:/a:redhat:enterprise_linux:atinject, p-cpe:/a:redhat:enterprise_linux:google-guice, p-cpe:/a:redhat:enterprise_linux:guava, p-cpe:/a:redhat:enterprise_linux:httpcomponents-client, p-cpe:/a:redhat:enterprise_linux:httpcomponents-core, p-cpe:/a:redhat:enterprise_linux:jakarta-annotations, p-cpe:/a:redhat:enterprise_linux:jakarta-mail-javadoc, p-cpe:/a:redhat:enterprise_linux:jakarta-mail, p-cpe:/a:redhat:enterprise_linux:jansi, p-cpe:/a:redhat:enterprise_linux:jcl-over-slf4j, p-cpe:/a:redhat:enterprise_linux:jmc, p-cpe:/a:redhat:enterprise_linux:jsr-305, p-cpe:/a:redhat:enterprise_linux:maven-lib, p-cpe:/a:redhat:enterprise_linux:maven-openjdk11, p-cpe:/a:redhat:enterprise_linux:maven-openjdk17, p-cpe:/a:redhat:enterprise_linux:maven-openjdk21, p-cpe:/a:redhat:enterprise_linux:maven-openjdk25, p-cpe:/a:redhat:enterprise_linux:maven-openjdk8, p-cpe:/a:redhat:enterprise_linux:maven-resolver, p-cpe:/a:redhat:enterprise_linux:maven-shared-utils, p-cpe:/a:redhat:enterprise_linux:maven-unbound, p-cpe:/a:redhat:enterprise_linux:maven-wagon-file, p-cpe:/a:redhat:enterprise_linux:maven-wagon-ftp, p-cpe:/a:redhat:enterprise_linux:maven-wagon-http-lightweight, p-cpe:/a:redhat:enterprise_linux:maven-wagon-http-shared, p-cpe:/a:redhat:enterprise_linux:maven-wagon-http, p-cpe:/a:redhat:enterprise_linux:maven-wagon-javadoc, p-cpe:/a:redhat:enterprise_linux:maven-wagon-provider-api, p-cpe:/a:redhat:enterprise_linux:maven-wagon-provider-test, p-cpe:/a:redhat:enterprise_linux:maven-wagon-providers, p-cpe:/a:redhat:enterprise_linux:maven-wagon-scm, p-cpe:/a:redhat:enterprise_linux:maven-wagon, p-cpe:/a:redhat:enterprise_linux:maven, p-cpe:/a:redhat:enterprise_linux:plexus-cipher, p-cpe:/a:redhat:enterprise_linux:plexus-classworlds, p-cpe:/a:redhat:enterprise_linux:plexus-containers-component-annotations, p-cpe:/a:redhat:enterprise_linux:plexus-containers, p-cpe:/a:redhat:enterprise_linux:plexus-interpolation, p-cpe:/a:redhat:enterprise_linux:plexus-sec-dispatcher, p-cpe:/a:redhat:enterprise_linux:plexus-utils, p-cpe:/a:redhat:enterprise_linux:sisu, p-cpe:/a:redhat:enterprise_linux:slf4j

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

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/6/2026

Reference Information

CVE: CVE-2026-71497

Detections

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