{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-70604", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-04T19:50:27.328Z", "datePublished": "2026-08-05T15:59:24.043Z", "dateUpdated": "2026-08-05T15:59:24.043Z"}, "containers": {"cna": {"title": "Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads", "problemTypes": [{"descriptions": [{"cweId": "CWE-942", "lang": "en", "description": "CWE-942: Permissive Cross-domain Policy with Untrusted Domains", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/electron/electron/security/advisories/GHSA-v3j7-r9gq-3gjw", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/electron/electron/security/advisories/GHSA-v3j7-r9gq-3gjw"}], "affected": [{"vendor": "electron", "product": "electron", "versions": [{"version": "< 39.8.10", "status": "affected"}, {"version": ">= 40.0.0-alpha.1, < 40.9.3", "status": "affected"}, {"version": ">= 41.0.0-alpha.1, < 41.4.0", "status": "affected"}, {"version": ">= 42.0.0-alpha.1, < 42.0.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-05T15:59:24.043Z"}, "descriptions": [{"lang": "en", "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.3, 41.4.0, and 42.0.0, a custom scheme registered with supportFetchAPI: true but without corsEnabled: true was not subject to CORS enforcement. A page loaded from a remote origin could therefore fetch() or XMLHttpRequest that scheme cross-origin and read the full response body, rather than the read being blocked. Apps that serve sensitive data from such a scheme and load remote or untrusted content in a renderer are affected. This issue is fixed in versions 39.8.10, 40.9.3, 41.4.0, and 42.0.0."}], "source": {"advisory": "GHSA-v3j7-r9gq-3gjw", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,39.8.10)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[40.0.0-alpha.1,40.9.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[41.0.0-alpha.1,41.4.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[42.0.0-alpha.1,42.0.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "electron", "source": "cna", "vendor": "electron"}, "product": "electron", "vendor": "electron"}], "created": "2026-08-05T17:30:07.292824+00:00", "updated": "2026-08-05T17:30:07.292843+00:00", "vendors": ["electron", "electron$PRODUCT$electron"]}