---
id: "CVE-2026-88066"
kind: "vulnerability"
aliases: ["CVE-2026-88066"]
title: "Claude Desktop on Windows runs a planted git.exe from opened repositories"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-tooling", "claude-desktop", "git", "windows"]
not_affected_if: ["fixed-version", "non-windows", "trusted-repos-only"]
published_at: "2026-11-03T20:18:18+00:00"
first_seen_at: "2026-11-03T20:49:23+00:00"
updated_at: "2026-11-03T20:50:12+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88066", "first_seen_at": "2026-11-03T20:49:23+00:00"}]
---

# Claude Desktop on Windows runs a planted git.exe from opened repositories

Claude Desktop on Windows launches git.exe without an absolute path, so Windows can pick a malicious git.exe sitting in the opened project's folder. Opening an attacker-controlled or shared repository runs that program with the user's privileges.

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

## How to check

- Open Claude Desktop and check the installed version against the fixed release in Fix.

## Fix

- Claude Desktop on Windows: `1.8089.0` or later.

## Timeline

- 2026-11-03T20:49:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-88066

## Documents

- [advisory] Vendor advisory: github.com https://github.com/anthropics/claude-code/security/advisories/GHSA-4p2j-qj3c-6x84

## From the sources

Claude Desktop is Anthropic's desktop application for interacting with Claude. Prior to 1.8089.0, Claude Desktop on Windows invokes git.exe through uv_spawn without an absolute path, allowing Windows search-path resolution to select a malicious git.exe placed in the opened project's current working directory before the intended system executable. Opening an attacker-controlled or shared repository can therefore execute the substituted program with the user's privileges. This issue is fixed in version 1.8089.0.

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