CVE-2026-47428
CRITICAL
9.6
CVSS 3.1
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.
Metadata
Severity & Metrics
9.6
CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| vitest-dev | vitest | — | >= 4.0.17, < 4.1.6, >= 5.0.0-beta.0, < 5.0.0-beta.3 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-79 | cna | CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 9.6 | CRITICAL | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
References (7)
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-2h32-95rg-cppp https://github.com/vitest-dev/vitest/security/advisories/GHSA-2h32-95rg-cppp
- https://github.com/vitest-dev/vitest/pull/10283 https://github.com/vitest-dev/vitest/pull/10283
- https://github.com/vitest-dev/vitest/pull/10285 https://github.com/vitest-dev/vitest/pull/10285
- https://github.com/vitest-dev/vitest/commit/18af98cee1830604d57f6a02bf28f8067cdffc06 https://github.com/vitest-dev/vitest/commit/18af98cee1830604d57f6a02bf28f8067cdffc06
- https://github.com/vitest-dev/vitest/commit/3514f9fa135c90e1c35754fc4d27c9cf351faafa https://github.com/vitest-dev/vitest/commit/3514f9fa135c90e1c35754fc4d27c9cf351faafa
- https://github.com/vitest-dev/vitest/releases/tag/v4.1.6 https://github.com/vitest-dev/vitest/releases/tag/v4.1.6
- https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.3 https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.3