tar-fs has a symlink validation bypass if destination directory is predictable with a specific tarball

Open Source Vulnerabilities CVE-2025-59343

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.

Open Source Vulnerabilities GHSA-vj76-c3g6-qr5v

### 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. ```js ignore (_, header) { // pass files & directories, ignore e.g. symlinks return header.type !== 'file' && header.type !== 'directory' } ``` ### Credit Reported by: Mapta / BugBunny_ai