NULL pointer dereference in qs - CVE-2026-8723

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Main Vulnerability Database Vulnerabilities #VU131746

NULL pointer dereference in qs - CVE-2026-8723

Published: May 18, 2026


Vulnerability identifier: #VU131746
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-8723
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to null pointer dereference in qs.stringify when processing arrays with comma format and encodeValuesOnly enabled. A remote attacker can supply input containing null or undefined array elements to cause a denial of service.

In typical Node.js HTTP frameworks, the synchronous exception usually causes the affected request to return an error rather than terminating the worker process. The vulnerable input is reachable from JSON request bodies or from application code constructing arrays from user input.


Affected software

qs
IBM Cloud Transformation Advisor
PowerVC
Automation Assets in IBM Cloud Pak for Integration (CP4I)
IBM Watson Discovery for IBM Cloud Pak for Data
IBM Decision Optimization for Cloud Pak for Data
Platform Navigator in IBM Cloud Pak for Integration (CP4I)
Application Modernization Accelerator

How to mitigate CVE-2026-8723

Install security update from vendor's website.

qs - update to 6.15.2
IBM Cloud Transformation Advisor - update to 5.0.0
Automation Assets in IBM Cloud Pak for Integration (CP4I) - addressed in versions 4.0.23-sc2, 4.4.0
IBM Watson Discovery for IBM Cloud Pak for Data - update to 5.3.2
Platform Navigator in IBM Cloud Pak for Integration (CP4I) - addressed in versions 16.1.0.26, 16.2.0
Application Modernization Accelerator - update to 5.0.0
IBM Decision Optimization for Cloud Pak for Data - update to 5.3.1 patch 6

External References

Related Security Bulletins