CVSS 4.0
8.2 highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NCVE-2026-39363
High (8.2). EPSS 3.4% chance of exploitation in the next 30 days. Fixed in vite 6.4.2, 7.3.2, 8.0.5.
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.
Severity
CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- EPSS
- 3.4% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-200, CWE-306, CWE-1220
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vitejs:vite
- voidzero:vite\+
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-p9ff-h696-f583 | npm | vite | >=8.0.0 <8.0.5 | 8.0.5 |
| GHSA-p9ff-h696-f583 | npm | vite | >=7.0.0 <7.3.2 | 7.3.2 |
| GHSA-p9ff-h696-f583 | npm | vite | >=6.0.0 <6.4.2 | 6.4.2 |