{"id":"GHSA-f37v-82c4-4x64","summary":"Electron: Crash in clipboard.readImage() on malformed clipboard image data","details":"### Impact\nApps that call `clipboard.readImage()` may be vulnerable to a denial of service. If the system clipboard contains image data that fails to decode, the resulting null bitmap is passed unchecked to image construction, triggering a controlled abort and crashing the process.\n\nApps are only affected if they call `clipboard.readImage()`. Apps that do not read images from the clipboard are not affected. This issue does not allow memory corruption or code execution.\n\n### Workarounds\nValidate that the clipboard contains image data via `clipboard.availableFormats()` before calling `clipboard.readImage()`. Note this only narrows the window — upgrading to a fixed version is recommended.\n\n### Fixed Versions\n* `42.0.0-alpha.5`\n* `41.1.0`\n* `40.8.5`\n* `39.8.5`\n\n### For more information\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)","aliases":["CVE-2026-34781"],"modified":"2026-04-08T12:08:25.778807Z","published":"2026-04-07T15:52:28Z","database_specific":{"github_reviewed_at":"2026-04-07T15:52:28Z","nvd_published_at":"2026-04-07T22:16:23Z","cwe_ids":["CWE-476"],"severity":"LOW","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/electron/electron/security/advisories/GHSA-f37v-82c4-4x64"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34781"},{"type":"WEB","url":"https://github.com/electron/electron/pull/50475"},{"type":"WEB","url":"https://github.com/electron/electron/commit/a48f03fb8d03933547281ddb2dbb6c6b9e705287"},{"type":"PACKAGE","url":"https://github.com/electron/electron"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v39.8.5"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v40.8.5"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v41.1.0"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v42.0.0-alpha.5"}],"affected":[{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"39.8.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-f37v-82c4-4x64/GHSA-f37v-82c4-4x64.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"40.0.0-alpha.1"},{"fixed":"40.8.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-f37v-82c4-4x64/GHSA-f37v-82c4-4x64.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"41.0.0-alpha.1"},{"fixed":"41.1.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-f37v-82c4-4x64/GHSA-f37v-82c4-4x64.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"42.0.0-alpha.1"},{"fixed":"42.0.0-alpha.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-f37v-82c4-4x64/GHSA-f37v-82c4-4x64.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L"}]}