CVE-2026-47428
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.
- CVSS 3.1
- 9.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-25)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-2h32-95rg-cppp | npm | @vitest/browser | >=4.0.17 <4.1.6 | 4.1.6 |
| GHSA-2h32-95rg-cppp | npm | @vitest/browser | >=5.0.0-beta.0 <5.0.0-beta.3 | 5.0.0-beta.3 |
References
- https://github.com/vitest-dev/vitest/commit/18af98cee1830604d57f6a02bf28f8067cdffc06
- https://github.com/vitest-dev/vitest/commit/3514f9fa135c90e1c35754fc4d27c9cf351faafa
- https://github.com/vitest-dev/vitest/pull/10283
- https://github.com/vitest-dev/vitest/pull/10285
- https://github.com/vitest-dev/vitest/releases/tag/v4.1.6