CVE-2025-59343
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-24

Last updated on: 2025-11-03

Assigner: GitHub, Inc.

Description
tar-fs provides filesystem bindings for tar-stream. Versions prior to 3.1.1, 2.1.3, and 1.16.5 are vulnerable to symlink validation bypass if the destination directory is predictable with a specific tarball. This issue has been patched in version 3.1.1, 2.1.4, and 1.16.6. A workaround involves using the ignore option on non files/directories.
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Meta Information
Published
2025-09-24
Last Modified
2025-11-03
Generated
2026-06-16
AI Q&A
2025-09-24
EPSS Evaluated
2026-06-15
NVD
CVE-2025-59343
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
mafintosh tar-fs *
node-tar-fs node-tar-fs *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-61 The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
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Executive Summary

This vulnerability in tar-fs affects versions prior to 3.1.1, 2.1.3, and 1.16.5, where symlink validation can be bypassed if the destination directory is predictable with a specific tarball. This means an attacker could potentially exploit this to create or manipulate symbolic links in unintended ways during extraction, leading to security issues. The problem has been fixed in later versions 3.1.1, 2.1.4, and 1.16.6.

Impact Analysis

The vulnerability can allow an attacker to bypass symlink validation, potentially leading to unauthorized file access or modification when extracting tarballs. This could result in security breaches such as overwriting critical files or executing malicious code, depending on the context in which tar-fs is used.

Mitigation Strategies

To mitigate this vulnerability, update tar-fs to version 3.1.1, 2.1.4, or 1.16.6 or later. As a workaround, use the ignore option on non files/directories when processing tarballs.

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