Disclosure summary
A vulnerability has been identified in Node.js, specifically affecting the handling of drive names in the Windows environment. Certain Node.js functions do not treat drive names as special on Windows. As a result, although Node.js assumes a relative path, it actually refers to the root directory. On Windows, a path that does not start with the file separator is treated as relative to the current directory. This vulnerability affects Windows users of `path.join` API.
Source-reported weakness categories
CWE-22
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2025-Jan
Open original source · Updated Aug 12, 2026
A vulnerability has been identified in Node.js, specifically affecting the handling of drive names in the Windows environment. Certain Node.js functions do not treat drive names as special on Windows. As a result, although Node.js assumes a relative path, it actually refers to the root directory. On Windows, a path that does not start with the file separator is treated as relative to the current directory. This vulnerability affects Windows users of `path.join` API.
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 5.6
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | cbl2 nodejs18 18.20.3-6 on CBL-Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 nodejs 20.14.0-8 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 nodejs18 18.20.3-6 on CBL Mariner 2.0 | (MSRC status code 3) |
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2025-09-03T20:12:01-04:00
MODIFIED 2026-08-12T19:51:28-04:00
INGESTED 2026-10-08T12:50:21-04:00