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

October 21, 2026

When accessing a malicious site while a dev server using Vite is running, that site was able to load scripts in a page served by the dev server.

References

github.com/advisories/GHSA-9jrq-w75r-8gcw
github.com/vitejs/vite/commit/7dafd8e56f152403a3230608fa4005273c2e9e17
github.com/vitejs/vite/pull/23653
github.com/vitejs/vite/security/advisories/GHSA-9jrq-w75r-8gcw
nvd.nist.gov/vuln/detail/CVE-2026-112945

Code Behaviors & Features

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