CVE-2026-39365mediumobserved exploitationCWE-22

CVE-2026-39365: medium-severity vulnerability in vitejs vite

Vite has a Path Traversal in Optimized Deps `.map` Handling

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50Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 6.3epss 0.9%
from disclosure to weapon
Published on NVDApr 7
VulnCheck+45d
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
vitejs · vitevitejs · vite-plus
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