{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-70603", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-04T19:50:27.328Z", "datePublished": "2026-08-05T15:56:50.574Z", "dateUpdated": "2026-08-05T18:14:55.960Z"}, "containers": {"cna": {"title": "Electron: shell.openPath path validation bypass via embedded null byte", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "lang": "en", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-158", "lang": "en", "description": "CWE-158: Improper Neutralization of Null Byte or NUL Character", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/electron/electron/security/advisories/GHSA-5c9j-mhmv-5xgx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/electron/electron/security/advisories/GHSA-5c9j-mhmv-5xgx"}], "affected": [{"vendor": "electron", "product": "electron", "versions": [{"version": "< 39.8.6", "status": "affected"}, {"version": ">= 40.0.0-alpha.1, < 40.9.0", "status": "affected"}, {"version": ">= 41.0.0-alpha.1, < 41.1.1", "status": "affected"}, {"version": ">= 42.0.0-alpha.1, < 42.0.0-beta.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-05T15:56:50.574Z"}, "descriptions": [{"lang": "en", "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1, shell.openPath() did not reject paths containing embedded null bytes. Apps that perform string-only validation of file paths, for example checking the file extension, before passing them to shell.openPath() could be bypassed, allowing an attacker-controlled path to open a different file than the one that passed validation. Apps are only affected if they pass paths derived from untrusted input to shell.openPath() and rely on string-based validation without a filesystem check. This issue is fixed in versions 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1."}], "source": {"advisory": "GHSA-5c9j-mhmv-5xgx", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-05T18:14:50.365146Z", "id": "CVE-2026-70603", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-05T18:14:55.960Z"}}]}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,39.8.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[40.0.0-alpha.1,40.9.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[41.0.0-alpha.1,41.1.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[42.0.0-alpha.1,42.0.0-beta.1)"}}], "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": "2026-08-05T17:30:07.293180+00:00", "updated": "2026-08-05T17:45:16.537238+00:00", "vendors": ["electron", "electron$PRODUCT$electron"]}