Permissive List of Allowed Inputs in DOMPurify - CVE-2026-41240

Vulnerability identifier: #VU126561

CSH Severity: Low

CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-41240

CWE-ID: CWE-183

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to inject forbidden elements into sanitized output.

The vulnerability exists due to a permissive list of allowed inputs in tag filtering logic when sanitizing content with a function-based ADD_TAGS predicate and FORBID_TAGS configured. A remote user can supply crafted markup that uses forbidden tags to inject forbidden elements into sanitized output.

Only configurations that use a function-based ADD_TAGS predicate are vulnerable.

DOMPurify
IBM Watson Discovery for IBM Cloud Pak for Data
IBM Maximo Application Suite - Manage Component
IBM Cloud Transformation Advisor
Jazz Reporting Service
JBoss Data Grid
IBM Maximo Scheduler Optimization
Rational Performance Tester
DevOps Test Performance
Application Modernization Accelerator
Fedora
python-jupytext

Install security update from vendor's website.

DOMPurify - update to 3.4.0
IBM Watson Discovery for IBM Cloud Pak for Data - update to 5.3.2
Jazz Reporting Service - addressed in versions 7.0.3 iFix023, 7.1 iFix011, 7.2 iFix003
IBM Maximo Application Suite - Manage Component - addressed in versions 9.0.26, 9.1.18
IBM Maximo Scheduler Optimization - addressed in versions 9.0.25, 9.1.14, 9.2.1
DevOps Test Performance - update to 11.0.8
python-jupytext - addressed in versions 1.19.1-4.fc42, 1.19.1-4.fc43, 1.19.1-4.fc44
Application Modernization Accelerator - update to 4.6.2
IBM Cloud Transformation Advisor - update to 4.6.2
JBoss Data Grid - update to 8.6.1

• https://github.com/cure53/DOMPurify/security/advisories/GHSA-h7mw-gpvr-xq4m

• Multiple vulnerabilities in DOMPurify
• Multiple vulnerabilities in IBM DevOps Test Performance
• Multiple vulnerabilities in IBM Maximo Application Suite - Manage Component
• Multiple vulnerabilities in IBM Application Modernization Accelerator
• Multiple vulnerabilities in IBM Transformation Advisor
• Multiple vulnerabilities in IBM Watson Discovery Cartridge
• Multiple vulnerabilities in JBoss Data Grid 8.6
• Multiple vulnerabilities in IBM Jazz Reporting Service
• Multiple vulnerabilities in IBM Maximo Scheduler Optimization
• Fedora 44 update for python-jupytext
• Fedora 43 update for python-jupytext
• Fedora 42 update for python-jupytext