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

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...

Symlink Following

Overview org.webjars.npm:tar-fs is a filesystem bindings for tar-stream. Affected versions of this package are vulnerable to Symlink Following via the symlink validation process in the inCwd function. An attacker can write files outside the intended extraction directory by crafting a malicious...

Security Bulletin: Vulnerabilities in tar-fs affects IBM watsonx Orchestrate with watsonx Assistant Cartridge

Summary Potential vulnerability in tar-fs has been identified that affects IBM watsonx Orchestrate with watsonx Assistant Cartridge - UAB Component. The vulnerability has been addressed. Refer to details for additional information. Vulnerability Details CVEID:CVE-2025-48387 DESCRIPTION: tar-fs...

CVE-2025-48387

tar-fs provides filesystem bindings for tar-stream. Versions prior to 3.0.9, 2.1.3, and 1.16.5 have an issue where an extract can write outside the specified dir with a specific tarball. This has been patched in versions 3.0.9, 2.1.3, and 1.16.5. As a workaround, use the ignore option to ignore n...