---
id: "CVE-2026-119288"
kind: "vulnerability"
aliases: ["CVE-2026-119288"]
title: "Zuke: Windows build shim lets injected text run extra commands"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["build-automation", "deno", "package", "windows", "zuke"]
not_affected_if: ["no-untrusted-arguments", "posix-only-builds"]
published_at: "2026-10-30T16:17:42+00:00"
first_seen_at: "2026-10-30T16:31:25+00:00"
updated_at: "2026-10-30T16:32:06+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119288", "first_seen_at": "2026-10-30T16:31:25+00:00"}]
---

# Zuke: Windows build shim lets injected text run extra commands

Zuke is a Deno build automation library whose @zuke/core package launches Windows .cmd and .bat tools through cmd /c, so unquoted shell metacharacters in attacker-influenced arguments are reparsed by cmd.exe. An attacker who controls that text can run an extra command with the build's credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed @zuke/core version in the project lockfile or with `deno info`, and see whether it is below `1.51.0`.
- Confirm whether builds run on Windows and whether any build passes external text into tools resolved from node_modules/.bin.

## Fix

- @zuke/core: move to `1.51.0`.

## Timeline

- 2026-10-30T16:31:25+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119288

## From the sources

Zuke is a code-first, strongly typed build automation system for Deno. Prior to 1.51.0, @zuke/core launches resolved Windows .cmd and .bat shims by prepending cmd /c, causing cmd.exe to reparse a command line assembled with C-runtime quoting rules. A build running on Windows that resolves a tool from node_modules/.bin and passes attacker-influenced text containing an unquoted &, |, or ^ metacharacter can execute an additional attacker-chosen command in the build's context with access to its credentials. POSIX platforms are not affected. This issue is fixed in version 1.51.0.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_