{"id":"CVE-2026-47428","state":"PUBLISHED","title":"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.","publishedAt":"2026-07-14T19:30:19.670Z","updatedAt":"2026-07-15T13:20:14.275Z","severity":{"score":9.6,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["vitest-dev vitest"],"affected":[{"vendor":"vitest-dev","product":"vitest","versions":[{"version":">= 4.0.17, < 4.1.6","status":"affected"},{"version":">= 5.0.0-beta.0, < 5.0.0-beta.3","status":"affected"}]}],"references":["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/10285","https://github.com/vitest-dev/vitest/commit/18af98cee1830604d57f6a02bf28f8067cdffc06","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/v5.0.0-beta.3"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/47xxx/CVE-2026-47428.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47428","state":"PUBLISHED","datePublished":"2026-07-14T19:30:19.670Z","dateUpdated":"2026-07-15T13:20:14.275Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-19T19:37:43.527Z"},"containers":{"cna":{"title":"Vitest browser mode serves unsanitized otelCarrier query parameter as inline script","descriptions":[{"lang":"en","value":"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":[{"vendor":"vitest-dev","product":"vitest","versions":[{"version":">= 4.0.17, < 4.1.6","status":"affected"},{"version":">= 5.0.0-beta.0, < 5.0.0-beta.3","status":"affected"}]}],"references":[{"url":"https://github.com/vitest-dev/vitest/security/advisories/GHSA-2h32-95rg-cppp","name":"https://github.com/vitest-dev/vitest/security/advisories/GHSA-2h32-95rg-cppp","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/vitest-dev/vitest/pull/10283","name":"https://github.com/vitest-dev/vitest/pull/10283","tags":["x_refsource_MISC"]},{"url":"https://github.com/vitest-dev/vitest/pull/10285","name":"https://github.com/vitest-dev/vitest/pull/10285","tags":["x_refsource_MISC"]},{"url":"https://github.com/vitest-dev/vitest/commit/18af98cee1830604d57f6a02bf28f8067cdffc06","name":"https://github.com/vitest-dev/vitest/commit/18af98cee1830604d57f6a02bf28f8067cdffc06","tags":["x_refsource_MISC"]},{"url":"https://github.com/vitest-dev/vitest/commit/3514f9fa135c90e1c35754fc4d27c9cf351faafa","name":"https://github.com/vitest-dev/vitest/commit/3514f9fa135c90e1c35754fc4d27c9cf351faafa","tags":["x_refsource_MISC"]},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.6","name":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.6","tags":["x_refsource_MISC"]},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.3","name":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.6,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-14T19:30:19.670Z"},"source":{"advisory":"GHSA-2h32-95rg-cppp","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/vitest-dev/vitest/security/advisories/GHSA-2h32-95rg-cppp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T13:20:10.196813Z","id":"CVE-2026-47428","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T13:20:14.275Z"}}]}}}