CVE catalog
CVE-2026-39363
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
- Severity
- High · CVSS 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 3.40% · Oct 25, 2026
A flaw was found in Vite, a frontend tooling framework. A remote attacker can exploit this vulnerability by connecting to the Vite development server's WebSocket without an Origin header. This allows the attacker to invoke the fetchModule function, enabling them to retrieve the contents of arbitrary files on the server. This information disclosure can lead to unauthorized access to sensitive data. Vite: Vite: Information disclosure via WebSocket connection bypasses access control The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | vite | Not reported | Not reported | unknown |
| Cpe | vite\+ | Not reported | Not reported | unknown |
| Cpe | vite | Not reported | Not reported | unknown |
| Cpe | vite\+ | Not reported | Not reported | unknown |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed: