CVE-2026-112942launch-editor: `fs.existsSync()` existence check can be bypassed on Windows
Updated under an hour ago ()
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It affects vitejs launch-editor and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 7.5 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-77
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 20, 2026
- First seen by InfoSec Signals
- Oct 20, 2026
Affected products
vitejs launch-editor vitejs:launch_editor (from the name) | before 2.14.2 | CNA record |
vitejs vite vitejs:vite (from the name) | from 8.3.0, < 8.3.3; from 8.2.0, < 8.2.4; from 8.0.0, < 8.1.6; from 7.0.0, < 7.3.7; before 6.4.4 | CNA record |
vitejs vite-plus vitejs:vite_plus (from the name) | before 1.1.0 | CNA record |
References
- https://github.com/vitejs/launch-editor/security/advisories/GHSA-587h-7wmj-h5pmx-refsource-confirm
- https://github.com/vitejs/launch-editor/commit/f13cd835d4b8e860b1d4d080ad8a490cc2463679x-refsource-misc
- https://github.com/vitejs/launch-editor/releases/tag/v2.14.2x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.