SB2026030915 - Arbitrary file overwrite via hardlinks in node-tar
Published: March 9, 2026
Security Bulletin ID
SB2026030915
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Link following (CVE-ID: CVE-2026-29786)
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 update from vendor's website.