Low 2.1Published Oct 20, 2026

CVE-2026-112945Vite: Cross origin script execution through Vite custom middleware

Updated under an hour ago (2026-10-21 10:00 UTC)

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Every CVE for vitejs vite

Exploited in the last 30 days

Vite is a frontend tooling framework for JavaScript. Prior to 6.4.4, 7.3.7, 8.1.6, 8.2.4, and 8.3.3, applications using custom middleware are vulnerable when they pass an unchanged browser request URL to server.transformIndexHtml. getHtmlFilename uses the query-bearing request URL to resolve an existing local file while preserving attacker-supplied leading slashes in the generated proxy module URL. If the transformed HTML contains an inline module script and a victim browser loads the crafted development-server page, the leading double slash makes the browser fetch and execute an attacker-controlled module in the Vite-served page. This execution can expose sensitive page data or permit critical actions available to the affected application. This issue is fixed in versions 6.4.4, 7.3.7, 8.1.6, 8.2.4, and 8.3.3.

CVSS: 2.1 LOW (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-80
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: Awaiting Analysis
Record last updated: Oct 20, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

vitejs vite vitejs:vite (from the name)	from 8.3.0, < 8.3.3; from 8.2.0, < 8.2.4; from 8.0.0, < 8.1.6; from 7.0.0, < 7.3.7; before 6.4.4	CNA record
vitejs vite-plus vitejs:vite_plus (from the name)	before 1.1.0	CNA record

References

https://github.com/vitejs/vite/security/advisories/GHSA-9jrq-w75r-8gcwx-refsource-confirm
https://github.com/vitejs/vite/pull/23653x-refsource-misc
https://github.com/vitejs/vite/commit/7dafd8e56f152403a3230608fa4005273c2e9e17x-refsource-misc

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.