CVE-2026-39363
Vite Affected by Arbitrary File Read via Vite Dev Server WebSocket
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?raw (or ?inline) to retrieve the contents of arbitrary files on the server as a JavaScript string (e.g., export default "..."). The access control enforced in the HTTP request path (such as server.fs.allow) is not applied to this WebSocket-based execution path. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5.
| CWE | CWE-200 CWE-306 |
| Vendor | vitejs |
| Product | vite |
| Published | Apr 7, 2026 |
| Last Updated | Jul 15, 2026 |
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Affected Versions
vitejs / vite
>= 8.0.0, < 8.0.5 >= 7.0.0, < 7.3.2 >= 6.0.0, < 6.4.2
vitejs / vite-plus
< 0.1.16
References
github.com: https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-39363 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2456179 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39363.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24761 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24762 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24866