#VU123629 Link following in node-tar - CVE-2026-29786
Published: March 9, 2026 / Updated: March 13, 2026
Vulnerability identifier: #VU123629
Vulnerability risk: High
CVSSv4.0: 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/E:P/U:Amber
CVE-ID: CVE-2026-29786
CWE-ID: CWE-59
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
node-tar
node-tar
Software vendor:
isaacs
isaacs
Description
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.
Remediation
Install updates from vendor's website.