{"id":"CVE-2020-4077","state":"PUBLISHED","title":"Context isolation bypass via contextBridge in Electron","description":"In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using both `contextIsolation` and `contextBridge` are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.","publishedAt":"2020-07-07T00:05:16.000Z","updatedAt":"2024-08-04T07:52:20.939Z","severity":{"score":7.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["electron electron"],"affected":[{"vendor":"electron","product":"electron","versions":[{"version":">= 9.0.0-beta.0, <= 9.0.0-beta.20","status":"affected"},{"version":">= 8.0.0, < 8.2.4","status":"affected"},{"version":"< 7.2.4","status":"affected"}]}],"references":["https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g","https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824"],"weaknesses":["CWE-501"],"ingestedAt":"2026-10-29T19:47:32.441Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/4xxx/CVE-2020-4077.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-4077","state":"PUBLISHED","datePublished":"2020-07-07T00:05:16.000Z","dateUpdated":"2024-08-04T07:52:20.939Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2019-12-30T00:00:00.000Z"},"containers":{"cna":{"title":"Context isolation bypass via contextBridge in Electron","descriptions":[{"lang":"en","value":"In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using both `contextIsolation` and `contextBridge` are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4."}],"affected":[{"vendor":"electron","product":"electron","versions":[{"version":">= 9.0.0-beta.0, <= 9.0.0-beta.20","status":"affected"},{"version":">= 8.0.0, < 8.2.4","status":"affected"},{"version":"< 7.2.4","status":"affected"}]}],"references":[{"url":"https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g","tags":["x_refsource_CONFIRM"]},{"url":"https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-501","description":"CWE-501 Trust Boundary Violation","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","dateUpdated":"2020-07-07T00:05:16.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa"},"source":{"advisory":"GHSA-h9jc-284h-533g","discovery":"UNKNOWN"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2020-4077","STATE":"PUBLIC","TITLE":"Context isolation bypass via contextBridge in Electron"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"electron","version":{"version_data":[{"version_value":">= 9.0.0-beta.0, <= 9.0.0-beta.20"},{"version_value":">= 8.0.0, < 8.2.4"},{"version_value":"< 7.2.4"}]}}]},"vendor_name":"electron"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using both `contextIsolation` and `contextBridge` are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-501 Trust Boundary Violation"}]}]},"references":{"reference_data":[{"name":"https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g","refsource":"CONFIRM","url":"https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g"},{"name":"https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824","refsource":"MISC","url":"https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824"}]},"source":{"advisory":"GHSA-h9jc-284h-533g","discovery":"UNKNOWN"}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T07:52:20.939Z"}}]}}}