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CVE-2025-59343

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Date: September 24, 2025

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.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2025-59343
https://github.com/mafintosh/tar-fs/security/advisories/GHSA-vj76-c3g6-qr5v
https://github.com/mafintosh/tar-fs/commit/0bd54cdf06da2b7b5b95cd4b062c9f4e0a8c4e09
https://github.com/mafintosh/tar-fs
https://www.mend.io/vulnerability-database/CVE-2025-59343

Severity Score

Weakness Type (CWE)

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-22

UNIX Symbolic Link (Symlink) Following

CWE-61

Top Fix

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Upgrade Version

Upgrade to version tar-fs - 3.1.1;tar-fs - 2.1.3;tar-fs - 1.16.5

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

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