{"id":"CVE-2021-39184","state":"PUBLISHED","title":"Sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API","description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. A vulnerability in versions prior to 11.5.0, 12.1.0, and 13.3.0 allows a sandboxed renderer to request a \"thumbnail\" image of an arbitrary file on the user's system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases. Versions 15.0.0-alpha.10, 14.0.0, 13.3.0, 12.1.0, and 11.5.0 all contain a fix for the vulnerability. Two workarounds aside from upgrading are available. One may make the vulnerability significantly more difficult for an attacker to exploit by enabling `contextIsolation` in one's app. One may also disable the functionality of the `createThumbnailFromPath` API if one does not need it.","publishedAt":"2021-10-12T19:05:11.000Z","updatedAt":"2024-08-04T01:58:18.275Z","severity":{"score":6.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["electron electron"],"affected":[{"vendor":"electron","product":"electron","versions":[{"version":"< 11.5.0","status":"affected"},{"version":">= 12.0.0, < 12.1.0","status":"affected"},{"version":">= 13.0.0, < 13.3.0","status":"affected"}]}],"references":["https://github.com/electron/electron/security/advisories/GHSA-mpjm-v997-c4h4","https://github.com/electron/electron/pull/30728"],"weaknesses":["CWE-668"],"ingestedAt":"2026-10-29T19:48:52.666Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/39xxx/CVE-2021-39184.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-39184","state":"PUBLISHED","datePublished":"2021-10-12T19:05:11.000Z","dateUpdated":"2024-08-04T01:58:18.275Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2021-08-16T00:00:00.000Z"},"containers":{"cna":{"title":"Sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API","descriptions":[{"lang":"en","value":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. A vulnerability in versions prior to 11.5.0, 12.1.0, and 13.3.0 allows a sandboxed renderer to request a \"thumbnail\" image of an arbitrary file on the user's system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases. Versions 15.0.0-alpha.10, 14.0.0, 13.3.0, 12.1.0, and 11.5.0 all contain a fix for the vulnerability. Two workarounds aside from upgrading are available. One may make the vulnerability significantly more difficult for an attacker to exploit by enabling `contextIsolation` in one's app. One may also disable the functionality of the `createThumbnailFromPath` API if one does not need it."}],"affected":[{"vendor":"electron","product":"electron","versions":[{"version":"< 11.5.0","status":"affected"},{"version":">= 12.0.0, < 12.1.0","status":"affected"},{"version":">= 13.0.0, < 13.3.0","status":"affected"}]}],"references":[{"url":"https://github.com/electron/electron/security/advisories/GHSA-mpjm-v997-c4h4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/electron/electron/pull/30728","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-668","description":"CWE-668: Exposure of Resource to Wrong Sphere","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","dateUpdated":"2021-10-12T19:05:11.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa"},"source":{"advisory":"GHSA-mpjm-v997-c4h4","discovery":"UNKNOWN"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-39184","STATE":"PUBLIC","TITLE":"Sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"electron","version":{"version_data":[{"version_value":"< 11.5.0"},{"version_value":">= 12.0.0, < 12.1.0"},{"version_value":">= 13.0.0, < 13.3.0"}]}}]},"vendor_name":"electron"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. A vulnerability in versions prior to 11.5.0, 12.1.0, and 13.3.0 allows a sandboxed renderer to request a \"thumbnail\" image of an arbitrary file on the user's system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases. Versions 15.0.0-alpha.10, 14.0.0, 13.3.0, 12.1.0, and 11.5.0 all contain a fix for the vulnerability. Two workarounds aside from upgrading are available. One may make the vulnerability significantly more difficult for an attacker to exploit by enabling `contextIsolation` in one's app. One may also disable the functionality of the `createThumbnailFromPath` API if one does not need it."}]},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-668: Exposure of Resource to Wrong Sphere"}]}]},"references":{"reference_data":[{"name":"https://github.com/electron/electron/security/advisories/GHSA-mpjm-v997-c4h4","refsource":"CONFIRM","url":"https://github.com/electron/electron/security/advisories/GHSA-mpjm-v997-c4h4"},{"name":"https://github.com/electron/electron/pull/30728","refsource":"MISC","url":"https://github.com/electron/electron/pull/30728"}]},"source":{"advisory":"GHSA-mpjm-v997-c4h4","discovery":"UNKNOWN"}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/electron/electron/security/advisories/GHSA-mpjm-v997-c4h4","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/electron/electron/pull/30728","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T01:58:18.275Z"}}]}}}