CVE-2026-23745

Medium

Description

node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.

SeverityMedium

CVSS6.1

Exploit probability—

ProductIsaacs Tar

PublishedJan 16, 2026

First seenJan 16, 2026

Weakness typeCWE-22Path traversal

How to fix

Update

isaacs tar7.5.3 or later
tar7.5.3 or later

Vendor advisories

Affected products

Product	Affected versions	Fixed in
isaacs tar	v < 7.5.3	7.5.3
tarnpm	v < 7.5.3	7.5.3

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