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High

Improper Input Validation in tar-fs

  • Disclosed: 01.05.2019
  • Updated: 11.10.2026 10:22

A vulnerability was found in tar-fs before 1.16.2. An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content.

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package tar-fs < 1.16.2 1.16.2

References

CVSS score 7.5/10
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE)
CWE-20
Platform
npm
Package
tar-fs
Disclosed
01.05.2019
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-x2mc-8fgj-3wmr - CC BY 4.0

Vulnerability history: tar-fs

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
4
First → latest
05.2019 09.2025
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 4

Disclosures per year

  1. tar-fs has a symlink validation bypass if destination directory is predictable with a specific tarball
    High CVE-2025-59343 >= 3.0.0, < 3.1.1, >= 2.0.0, < 2.1.4, < 1.16.6 3.1.1, 2.1.4, 1.16.6
  2. tar-fs can extract outside the specified dir with a specific tarball
    High CVE-2025-48387 < 1.16.5, >= 2.0.0, < 2.1.3, >= 3.0.0, < 3.0.9 1.16.5, 2.1.3, 3.0.9
  3. tar-fs Vulnerable to Link Following and Path Traversal via Extracting a Crafted tar File
    High · 7.5 CVE-2024-12905 < 1.16.4, >= 2.0.0, < 2.1.2, >= 3.0.0, < 3.0.7 1.16.4, 2.1.2, 3.0.7
  4. Improper Input Validation in tar-fs this entry
    High · 7.5 CVE-2018-20835 < 1.16.2 1.16.2

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