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Fencer Vulns
medium 4.7

CVE-2026-71497 json

jsoup: Cleaner may expose markup with custom raw-text elements

published 2026-08-06 3 mo ago modified 2026-10-24 15 d ago also GHSA-pmhh-3w7g-xqp8 , EUVD-2026-54153

cvss
4.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.jsoup:jsoup 1.23.1
  • jsoup Debian 14 1.23.2-1

debian advisories DEBIAN-CVE-2026-71497

  • javapackages-bootstrap Azure Linux 3.0 1.14.0-5

azure linux advisories AZL-95475

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-71497 updated cvss 4.7

org.jsoup/jsoup: jsoup: Cross-site scripting via malformed HTML tag names

  • Red Hat Cryostat 4 jsoup 1.22.2.redhat-00002 Red Hat Migration Toolkit for Applications 8 mta/mta-cli-rhel9, mta/mta-java-external-provider-rhel9 Red Hat OpenShift Developer Tools and Services ocp-tools-4/jenkins-rhel8, ocp-tools-4/jenkins-rhel9, jenkins-2-plugins 4.12.1758299735-1.el8 Red Hat AMQ Broker 7 jsoup 1.22.2.redhat-00002 Red Hat build of Apache Camel - HawtIO 4 jsoup 1.22.2.redhat-00002 Red Hat build of Apicurio Registry 3 jsoup 1.22.2.redhat-00002
    +11 more products
    Red Hat build of Quarkus jsoup 1.22.2.redhat-00002 Red Hat build of Quarkus Native builder jsoup 1.22.2.redhat-00002 Red Hat Enterprise Linux 7 maven-wagon-scm, maven-wagon-javadoc, maven-wagon 2.4-3.el7, maven-wagon-provider-test Red Hat Enterprise Linux 8 maven-wagon, maven-wagon-ftp, maven-wagon-file, maven-wagon-http, maven-wagon-javadoc, maven-wagon-providers, +3 more Red Hat Enterprise Linux 9 jmc, sisu, guava, jansi, maven, slf4j, +31 more Red Hat Enterprise Linux 10 jakarta-mail 2.1.2-6.el10 Red Hat JBoss Enterprise Application Platform 7 jsoup 1.22.2.redhat-00002, eap74-els-openjdk8-openshift-rhel8, eap74-els-openjdk11-openshift-rhel8, eap74-els-openjdk17-openshift-rhel8, jboss-eap-7-eap74-els-openjdk11-openshift-rhel8, jboss-eap-7-eap74-els-openjdk17-openshift-rhel8 Red Hat JBoss Enterprise Application Platform Expansion Pack jsoup 1.22.2.redhat-00002 Red Hat Single Sign-On 7 jsoup 1.22.2.redhat-00002 Red Hat streams for Apache Kafka 2 jsoup 1.22.2.redhat-00002 Red Hat streams for Apache Kafka 3 jsoup 1.22.2.redhat-00002
    affected: no fix available “Fix deferred”
  • Red Hat build of Quarkus 3.27.5.SP2
    fixed: vendor fix RHSA-2026:69470
  • Red Hat build of Quarkus 3.33.3.SP2
    fixed: vendor fix RHSA-2026:69440

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 4.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.jsoup:jsoup
>=1.14.3, <1.23.1
1.23.1

Affected products

  • jhy jsoup

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.