Prototype pollution in axios - CVE-2026-42044

Vulnerability identifier: #VU127593

CSH Severity: Medium

CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-42044

CWE-ID: CWE-1321

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to tamper with JSON API responses.

The vulnerability exists due to prototype pollution in parseReviver in lib/defaults/index.js when parsing JSON responses. A remote attacker can pollute Object.prototype.parseReviver via another vulnerable library in the dependency tree to tamper with JSON API responses.

Exploitation requires a separate prototype pollution source in the application's dependency tree.

axios
Storage Sentinel Anomaly Scan Engine
IBM supplied MQ Advanced container images
Rational Developer for i
QRadar Threat Intelligence
QRadar Deployment Intelligence App
IBM Cloud Pak System
IBM MQ Operator
Jira Service Management Data Center
IBM Sterling Secure Proxy
IBM Sterling External Authentication Server
Jira Software Data Center
IBM Decision Optimization for Cloud Pak for Data
Ubuntu
node-axios (Ubuntu package)

Install security update from vendor's website.

axios - update to 1.15.2
Storage Sentinel Anomaly Scan Engine - update to 2.3.1
IBM Cloud Pak System - update to 2.3.5.1
IBM MQ Operator - addressed in versions 3.2.26 SC2, 4.0.1 SC2
Jira Service Management Data Center - addressed in versions 10.3.22, 11.3.7
IBM Sterling Secure Proxy - addressed in versions 6.1.0.4 iFix01, 6.2.1.2.iFix02
IBM Sterling External Authentication Server - update to 6.1.1.3 iFix01
IBM supplied MQ Advanced container images - update to 10.0.0.0-r2
Rational Developer for i - update to 9.9.0.4
Jira Software Data Center - addressed in versions 10.3.22, 11.3.7
node-axios (Ubuntu package) - addressed in versions 0.19.0+dfsg-2ubuntu0.1~esm1, 0.26.0+dfsg-1ubuntu0.1~esm1, 1.6.8+dfsg-2ubuntu0.1~esm1, 1.13.2+dfsg-1ubuntu0.1~esm1
QRadar Threat Intelligence - update to 2.6.0
QRadar Deployment Intelligence App - update to 3.0.20
IBM Decision Optimization for Cloud Pak for Data - update to 5.3.1 patch 6

• https://github.com/axios/axios/security/advisories/GHSA-3w6x-2g7m-8v23
• https://github.com/advisories/GHSA-3w6x-2g7m-8v23

• Multiple vulnerabilities in axios
• Multiple vulnerabilities in IBM Decision Optimization for Cloud Pak for Data
• Multiple vulnerabilities in IBM Cloud Pak System
• Multiple vulnerabilities in IBM MQ Operator and Queue manager container images
• Multiple vulnerabilities in Jira Service Management Data Center
• Multiple vulnerabilities in Jira Software Data Center
• Ubuntu update for node-axios
• Multiple vulnerabilities in IBM Rational Developer for i
• Multiple vulnerabilities in IBM Storage Sentinel Anomaly Scan Engine
• Multiple vulnerabilities in IBM Sterling External Authentication Server
• Multiple vulnerabilities in IBM Sterling Secure Proxy
• Multiple vulnerabilities in IBM QRadar Deployment Intelligence App
• Multiple vulnerabilities in IBM QRadar Threat Intelligence