CVE-2026-39363Vite is a frontend tooling framework for JavaScript.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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
- Not given
- NVD analysis
- Modified
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
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 |
voidzero vite+ voidzero:vite+ | through 0.1.15 | NVD |
References
- https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583exploit, 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.