Medium severity · published Apr 7, 2026
CVE-2026-39365
Vite has a Path Traversal in Optimized Deps `.map` Handling
5.3
CVSS
0.9%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
vite · vitejs
>= 8.0.0, < 8.0.5; >= 7.0.0, < 7.3.2; >= 6.0.0, < 6.4.2 · source: vendor, NVD
VI
vite-plus · vitejs
< 0.1.16 · source: vendor
VI
Vite+ · Voidzero
through 0.1.15 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-39365
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-39365
Exploit
https://github.com/vitejs/vite/security/advisories/GHSA-4w7w-66w2-5vf9
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