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CVE PROGRAM SOURCE RECORD9.6 Critical

CVE-2026-47428

Vitest browser mode serves unsanitized otelCarrier query parameter as inline script

Description

Vitest is a testing framework powered by Vite. From 4.0.17 until 4.1.6 and 5.0.0-beta.3, Vitest Browser Mode served /__vitest_test__/ with the otelCarrier query parameter inserted directly into an inline module script, allowing a crafted browser-runner URL to execute arbitrary JavaScript in the Vitest server origin and recover VITEST_API_TOKEN for authenticated API calls. This issue is fixed in versions 4.1.6 and 5.0.0-beta.3.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

vitest-dev vitest

  • >= 4.0.17, < 4.1.6affected
  • >= 5.0.0-beta.0, < 5.0.0-beta.3affected

References