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Fencer Intel
medium 4.7

CVE-2026-71497 json

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

published 3mo ago modified 18d ago also EUVD-2026-54153 , GHSA-pmhh-3w7g-xqp8

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 jsoup 1.23.1
  • 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

Is CVE-2026-71497 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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
3mo ago

Exploit prediction

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

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 Intel 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.