Symlink Following Affecting tar-fs package, versions <1.16.6>=2.0.0 <2.1.4>=3.0.0 <3.1.1
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Test your applications- Snyk IDSNYK-JS-TARFS-13045213
- published25 Sept 2025
- disclosed24 Sept 2025
- creditMapta, BugBunny_ai
Introduced: 24 Sep 2025
NewCVE-2025-59343 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade tar-fs to version 1.16.6, 2.1.4, 3.1.1 or higher.
Overview
tar-fs is a filesystem bindings for tar-stream.
Affected versions of this package are vulnerable to Symlink Following via the symlink validation process in the inCwd function. An attacker can write files outside the intended extraction directory by crafting a malicious tarball that contains symlinks starting with the name of the current working directory.
Workaround
This vulnerability can be mitigated by using the ignore option to exclude non-file and non-directory entries during the extraction process.