Update dependency tar-fs to v1.16.6 [SECURITY]

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This notice will be removed on 2025-10-07.

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This PR contains the following updates:

Package	Change	Age	Confidence
tar-fs	1.16.0 -> 1.16.6
tar-fs	1.16.3 -> 1.16.6

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Warning

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GitHub Vulnerability Alerts

CVE-2018-20835

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.

CVE-2024-12905

An Improper Link Resolution Before File Access ("Link Following") and Improper Limitation of a Pathname to a Restricted Directory ("Path Traversal"). This vulnerability occurs when extracting a maliciously crafted tar file, which can result in unauthorized file writes or overwrites outside the intended extraction directory. The issue is associated with index.js in the tar-fs package.

This issue affects tar-fs: from 0.0.0 before 1.16.4, from 2.0.0 before 2.1.2, from 3.0.0 before 3.0.7.

PoC

// Create a writable stream to extract the tar content
const extractStream = tarfs.extract('/', {
    // We can ignore the file type checks to allow the extraction of the malicious file
    ignore: (name) => false,
});

// Create a tar stream
const tarStream = tarfs.pack().on('error', (err) => {
    throw err;
});

// Append the malicious entry to the tar stream
tarStream.entry({ name: '/flag.txt', mode: 0o644 }, Buffer.from('This is a flag!'));

// Finalize the tar stream
tarStream.finalize();

// Pipe the tar stream into the extract stream
tarStream.pipe(extractStream);

CVE-2025-48387

Impact

v3.0.8, v2.1.2, v1.16.4 and below

Patches

Has been patched in 3.0.9, 2.1.3, and 1.16.5

Workarounds

You can use the ignore option to ignore non files/directories.

  ignore (_, header) {
    // pass files & directories, ignore e.g. symlinks
    return header.type !== 'file' && header.type !== 'directory'
  }

Credit

Thank you Caleb Brown from Google Open Source Security Team for reporting this in detail.

CVE-2025-59343

Impact

v3.1.0, v2.1.3, v1.16.5 and below

Patches

Has been patched in 3.1.1, 2.1.4, and 1.16.6

Workarounds

You can use the ignore option to ignore non files/directories.

  ignore (_, header) {
    // pass files & directories, ignore e.g. symlinks
    return header.type !== 'file' && header.type !== 'directory'
  }

Credit

Reported by: Mapta / BugBunny_ai

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Release Notes

mafintosh/tar-fs (tar-fs)

v1.16.6

Compare Source

v1.16.5

Compare Source

v1.16.4

Compare Source

v1.16.3

Compare Source

v1.16.2

Compare Source

v1.16.1

Compare Source

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