Vulnerability · Published Oct 20, 2026 · Assigned by GitHub_M
CVE-2026-112942launch-editor: `fs.existsSync()` existence check can be bypassed on Windows
High 7.5
In plain English
A high-severity command injection in launch-editor from vitejs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
launch-editor allows users to open files with line numbers in editor from Node.js. Prior to 2.14.2, launch-editor-middleware processes an attacker-controlled Windows file argument where the file argument ends in a parent-directory component plus a line-and-column suffix: the path is resolved while the suffix is still present, and launch-editor removes the suffix before its existsSync check, leaving the existing parent directory for existsSync and allowing the attacker-controlled file argument to pass filename existence validation without requiring the malicious filename to exist. The bypass can lead to OS command injection when combined with the separately described Windows percent-expansion flaw. This issue is fixed in version 2.14.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | launch-editor | 2.14.2 | GHSA-587h-7wmj-h5pm |
| npm | vite | 8.3.3 | GHSA-587h-7wmj-h5pm |
| npm | vite | 8.2.4 | GHSA-587h-7wmj-h5pm |
| npm | vite | 8.1.6 | GHSA-587h-7wmj-h5pm |
| npm | vite | 7.3.7 | GHSA-587h-7wmj-h5pm |
| npm | vite | 6.4.4 | GHSA-587h-7wmj-h5pm |
| npm | vite-plus | 1.1.0 | GHSA-587h-7wmj-h5pm |
Affected products (as reported)
Weakness: CWE-77 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N