launch-editor: `fs.existsSync()` existence check can be bypassed on Windows
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.
CVE-2026-112942
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-112942
launch-editor
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
vite
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
vite-plus
Source reference: /containers/cna/affected/2/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "vitejs",
"product": "launch-editor",
"versions": [
{
"status": "affected",
"version": "< 2.14.2"
}
]
},
{
"vendor": "vitejs",
"product": "vite",
"versions": [
{
"status": "affected",
"version": ">= 8.3.0, < 8.3.3"
},
{
"status": "affected",
"version": ">= 8.2.0, < 8.2.4"
},
{
"status": "affected",
"version": ">= 8.0.0, < 8.1.6"
},
{
"status": "affected",
"version": ">= 7.0.0, < 7.3.7"
},
{
"status": "affected",
"version": "< 6.4.4"
}
]
},
{
"vendor": "vitejs",
"product": "vite-plus",
"versions": [
{
"status": "affected",
"version": "< 1.1.0"
}
]
}
]- Related CVEs
- CVE-2026-112942
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #49200 · Revision 1
- Added to Heist Feed
- Publisher date