---
id: CVE-2026-112943
aliases:
  - GHSA-698v-4r3x-3vcv
title: 'launch-editor: escapeCmdArgs() omits % escaping on Windows'
summary: 'launch-editor: escapeCmdArgs() omits % escaping on Windows'
severity: medium
cvss: 6.3
cwe:
  - CWE-78
vendor: launch-editor
product: launch-editor
ecosystem: npm
affected:
  - launch-editor <= 2.14.1
  - 'vite >= 8.3.0, <= 8.3.2'
  - 'vite >= 8.2.0, <= 8.2.3'
  - 'vite >= 8.0.0, <= 8.1.5'
  - 'vite >= 7.0.0, <= 7.3.6'
  - vite <= 6.4.3
  - vite-plus <= 1.0.0
patched:
  - launch-editor 2.14.2
  - vite 8.3.3
  - vite 8.2.4
  - vite 8.1.6
  - vite 7.3.7
  - vite 6.4.4
  - vite-plus 1.1.0
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T18:30:25Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-698v-4r3x-3vcv'
references:
  - url: >-
      https://github.com/vitejs/launch-editor/security/advisories/GHSA-698v-4r3x-3vcv
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-112943'
  - url: 'https://github.com/vitejs/launch-editor/pull/155'
  - url: >-
      https://github.com/vitejs/launch-editor/commit/3c2f9bf2ff8fe63d056a8f9cc52d825b66ca79fc
  - url: 'https://github.com/vitejs/launch-editor/releases/tag/v2.14.2'
  - url: 'https://github.com/advisories/GHSA-698v-4r3x-3vcv'
tags:
  - ghsa
  - npm
  - cve.org
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-20T15:13:29.374778Z'
cvssSource: cna
ingestedAt: '2026-10-20T15:09:24.114Z'
epss: 0.00414
epssPercentile: 0.35529
---

## Overview

### Summary

`launch-editor` did not escape `%` on Windows when passing an argument to `cmd`. When an environment variable contained a malicious value, it was possible that that content to be executed.

### Impact

Only apps that match all of the following conditions are affected:

- The user uses Windows
- An attacker can place a file with the malicious filename containing `&` or `%`
- Either of
  - An attacker can inject an environment variable with a malicious value
  - An attacker can add a NTFS alternate data stream to the file placed

### Details

Unlike `.sh` files, `.bat` / `.cmd` files on Windows cannot be called directly using [`child_process.spawn`](https://nodejs.org/docs/latest-v24.x/api/child_process.html#child_processspawncommand-args-options) and requires passing them as an argument of `cmd.exe`. To do so, launch-editor escapes the arguments passed to `cmd.exe`. But `launch-editor` did not escape `%` which is used for environment variables.

Because `launch-editor` checks if the argument matches an existing filename, the attack requires the attacker to be able to place a file.

- If the attacker can inject an environment variable as well, they can include the subcommand in the env variable (e.g. set ` &calc.exe ` to `%ENV%`) and call `launchEditor` with `something%ENV%`.
- If the attacker can place a NTFS alternate data stream to the file (e.g. a NTFS alternate data stream named `~-38%calc.exe`), they can call `launchEditor` with `something %CMDCMDLINE:~-38%calc.exe`.
- If the attacker can create a filename containing the `%CD%` and the subcommand (e.g. `&calc.exe `), they can call `launchEditor` with `./%CD%`

## Affected packages

- `launch-editor <= 2.14.1`
- `vite >= 8.3.0, <= 8.3.2`
- `vite >= 8.2.0, <= 8.2.3`
- `vite >= 8.0.0, <= 8.1.5`
- `vite >= 7.0.0, <= 7.3.6`
- `vite <= 6.4.3`
- `vite-plus <= 1.0.0`

## Remediation

Upgrade to a patched release:

- `launch-editor 2.14.2`
- `vite 8.3.3`
- `vite 8.2.4`
- `vite 8.1.6`
- `vite 7.3.7`
- `vite 6.4.4`
- `vite-plus 1.1.0`