Vulnerability Intelligence Report
Vite has a Path Traversal in Optimized Deps `.map` Handling
CVE-2026-39365
Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the server.fs.strict allow list and retrieve .map files located outside the project root, provided they can be parsed as valid source map JSON. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5.
Nuclei Template
CVSS Base Score
6.3
MEDIUM
EPSS Probability:0.91%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)
CWE-22 ↗CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| vitejs | vite | >= 8.0.0, < 8.0.5 (affected), >= 7.0.0, < 7.3.2 (affected), >= 6.0.0, < 6.4.2 (affected) |
| vitejs | vite-plus | < 0.1.16 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | GitHub, Inc. · Vendor · USA |
| Reserved | 2026-04-06T21:29:17 |
| Published | 2026-04-07T19:13:50 |
| Last Updated | 2026-04-15T14:23:24 |
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