Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE-2026-23745
Summary
node-tar is a Tar for Node.js. The node-tar library versions through 7.5.2 fail to sanitize the "linkpath" of Link (hardlink) and Symbolic Link entries when "preservePaths" is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.
- LOW
- LOCAL
- ACTIVE
- NONE
CWE-22 - Path Traversal
Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.
References
Advisory Timeline
- Published
