Main Vulnerability Database Vulnerabilities #VU123629

Link following in node-tar - CVE-2026-29786

Published: March 9, 2026 / Updated: March 13, 2026

Vulnerability identifier: #VU123629

CSH Severity: High

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-29786

CWE-ID: CWE-59

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to overwrite arbitrary files on the system.

The vulnerability exists due to insecure handling of hard links inside archives. A remote attacker can supply a specially crafted archive to the application that can overwrite arbitrary files on the system with privileges of the process performing data extraction.

Affected software

node-tar
IBM Watson Discovery for IBM Cloud Pak for Data
Jira Service Management Data Center
Confluence Data Center
Jira Software Data Center
Maximo Application Suite - Visual Inspection Component
IBM QRadar Data Synchronization App

How to mitigate CVE-2026-29786

Install updates from vendor's website.

node-tar - update to 7.5.10
IBM Watson Discovery for IBM Cloud Pak for Data - update to 5.3.2
Jira Service Management Data Center - addressed in versions 10.3.18, 11.3.5
Maximo Application Suite - Visual Inspection Component - addressed in versions 8.9.21, 9.0.19, 9.1.12
Confluence Data Center - addressed in versions 9.2.22, 10.2.14
Jira Software Data Center - addressed in versions 10.3.18, 11.3.5
IBM QRadar Data Synchronization App - update to 4.0.0

Links to Public Exploits and PoC-codes

Exploit #12488 - NodeJS-Tar-Symlink-Exploit-CVE-2026-29786 (Technical analysis and Proof-of-Concept (PoC) for a critical Path Traversal vulnerability via Symlink manipulation in the Node.js 'tar' package (CVE-2026-29786)) (March 13, 2026)

External References

https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96