zuke-build Zuke up to 1.3.x Setup lstat path traversal

Summaryinfo

A vulnerability has been found in zuke-build Zuke up to 1.3.x and classified as problematic. The affected element is the function lstat of the component Setup. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2026-119291. The attack can only be performed from a local environment. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in zuke-build Zuke up to 1.3.x and classified as problematic. This issue affects the function lstat of the component Setup. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is integrity. The summary by CVE is:

Zuke is a code-first, strongly typed build automation system for Deno. Prior to 1.4.0, @zuke/cli uses lstat to inspect scaffold names but then performs link-following reads, writes, and permission changes in zuke setup and zuke import. An attacker who supplies an untrusted cloned repository, template, or archive with a symbolic link at a scaffolded name can cause setup to overwrite a target outside the selected directory with the invoking user's permissions. The .gitignore path requires no flag, while --force permits a linked launcher target to be written and made executable; import can also read link-target content and incorporate it into the generated build file. This issue is fixed in version 1.4.0.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-119291 since 10/29/2026. The exploitation is known to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 1.4.0 eliminates this vulnerability.

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Productinfo

Vendor

• zuke-build

Name

• Zuke

Version

• 1.0
• 1.1
• 1.2
• 1.3

Website

• Product: https://github.com/zuke-build/zuke/

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