CVE-2026-39363

HIGH EPSS 81.1%
Published Apr 7, 20262mo ago · Modified Jun 17, 20262w ago
8.2 CVSS 4.0
High
Find Similar
Published Apr 7, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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, 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.

CVSS Details

Base Score
8.2
Exploitability
—
Impact
—
Vector string
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
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
81.1% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure
CWE-306 Missing Authentication for Critical Function Authentication

Affected Products 4

VendorProductVersionRange
vitejsvite*≥6.0.0  –  ≤6.4.1
vitejsvite*≥7.0.0  –  ≤7.3.1
vitejsvite*≥8.0.0  –  ≤8.0.4
voidzerovite\+* ≤0.1.15

References 1

  • github.com https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583
    ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.