{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102677", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-29T16:10:04.075Z", "datePublished": "2026-09-29T17:43:26.960Z", "dateUpdated": "2026-09-29T17:43:26.960Z"}, "containers": {"cna": {"title": "Electron: Sandboxed preload code cache can be poisoned by a compromised renderer", "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "lang": "en", "description": "CWE-20: Improper Input Validation", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq"}, {"name": "https://github.com/electron/electron/pull/52480", "tags": ["x_refsource_MISC"], "url": "https://github.com/electron/electron/pull/52480"}, {"name": "https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601", "tags": ["x_refsource_MISC"], "url": "https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601"}, {"name": "https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3", "tags": ["x_refsource_MISC"], "url": "https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3"}, {"name": "https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217", "tags": ["x_refsource_MISC"], "url": "https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217"}, {"name": "https://github.com/electron/electron/releases/tag/v42.10.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/electron/electron/releases/tag/v42.10.0"}, {"name": "https://github.com/electron/electron/releases/tag/v43.5.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/electron/electron/releases/tag/v43.5.0"}, {"name": "https://github.com/electron/electron/releases/tag/v44.0.0-beta.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/electron/electron/releases/tag/v44.0.0-beta.6"}], "affected": [{"vendor": "electron", "product": "electron", "versions": [{"version": ">= 42.3.3, < 42.10.0", "status": "affected"}, {"version": ">= 43.0.0-beta.1, < 43.5.0", "status": "affected"}, {"version": ">= 44.0.0-alpha.1, < 44.0.0-beta.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-29T17:43:26.960Z"}, "descriptions": [{"lang": "en", "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6."}], "source": {"advisory": "GHSA-qmv3-fv6v-rmhq", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "electron", "vendor": "electron", "versions": [{"status": "affected", "version": ">= 42.3.3, < 42.10.0"}, {"status": "affected", "version": ">= 43.0.0-beta.1, < 43.5.0"}, {"status": "affected", "version": ">= 44.0.0-alpha.1, < 44.0.0-beta.6"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6."}], "id": "CVE-2026-102677", "lastModified": "2026-09-29T18:17:09.573", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.1, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-29T18:17:09.573", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601"}, {"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3"}, {"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217"}, {"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/pull/52480"}, {"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/releases/tag/v42.10.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/releases/tag/v43.5.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/releases/tag/v44.0.0-beta.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-345"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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