CVE-2026-47428
CRITICALVitest browser mode serves unsanitized otelCarrier query parameter as inline script
Title source: cnaDescription
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.
References (7)
Core 7
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/vitest-dev/vitest/security/advisories/GHSA-2h32-95rg-cppp
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/pull/10283
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/pull/10285
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/commit/18af98cee1830604d57f6a02bf28f8067cdffc06
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/commit/3514f9fa135c90e1c35754fc4d27c9cf351faafa
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/releases/tag/v4.1.6
X_Refsource_Misc x_refsource_misc
https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.3
Scores
CVSS v3
9.6
EPSS
0.0039
EPSS Percentile
31.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
Status
published
Products (2)
vitest-dev/vitest
>= 4.0.17, < 4.1.6
vitest-dev/vitest
>= 5.0.0-beta.0, < 5.0.0-beta.3
Published
Jul 14, 2026
Tracked Since
Jul 15, 2026