High 8.2Published Apr 7, 2026

CVE-2026-39363Vite Affected by Arbitrary File Read via Vite Dev Server WebSocket

Updated under an hour ago (Oct 28, 2026, 1:00 AM ET)

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It affects vitejs vite and 9 other products. Add what you run to find out whether that includes you.

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Every CVE for vitejs vite

Exploited in the last 30 days

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: 8.2 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-200, CWE-306, CWE-1220
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Aug 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

vitejs vite vitejs:vite (from the name)	from 8.0.0, < 8.0.5; from 7.0.0, < 7.3.2; from 6.0.0, < 6.4.2	CNA record
vitejs vite-plus vitejs:vite_plus (from the name)	before 0.1.16	CNA record
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8 redhat:ansible_automation_platform	from 0:2.5.20260422-3.el8ap not affected	CISA ADP
Red Hat Red Hat Advanced Cluster Security 4 redhat:advanced_cluster_security	4	CISA ADP
Red Hat Red Hat Build of Keycloak redhat:build_keycloak	All versions	CISA ADP
Red Hat Red Hat Build of Podman Desktop redhat:podman_desktop	1	CISA ADP
Red Hat Red Hat JBoss Enterprise Application Platform 8 redhat:jboss_enterprise_application_platform	8	CISA ADP
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp	Versions not stated	CISA ADP
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift	4	CISA ADP
vitejs vite vitejs:vite	from 6.0.0 through 6.4.1; from 7.0.0 through 7.3.1; from 8.0.0 through 8.0.4	NVD
1–10 of 11

References

References

https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583	x-refsource-confirm, exploit, vendor-advisory
https://access.redhat.com/errata/RHSA-2026:24761
https://access.redhat.com/errata/RHSA-2026:24762
https://access.redhat.com/errata/RHSA-2026:24866
https://access.redhat.com/errata/RHSA-2026:59153
https://access.redhat.com/security/cve/CVE-2026-39363
https://bugzilla.redhat.com/show_bug.cgi?id=2456179
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39363.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.