{"schema":"threatline.record/2","record":{"id":"CVE-2026-102677","aliases":["GHSA-qmv3-fv6v-rmhq"],"summary":"Electron: Sandboxed preload code cache can be poisoned by a compromised renderer","details":"### Impact\n\nThe cache Electron keeps for sandboxed preload scripts did not verify that a cached entry matched the preload it was served for. A compromised renderer could use this to run its own code in the preload context on a later load.\n\nApps are only affected if they load untrusted content. Apps that do not load untrusted content are not affected.\n\n### Workarounds\n\nThere are no app side workarounds, you must update to a patched version of Electron.\n\n### Fixed Versions\n\n* `44.0.0-beta.6`\n* `43.5.0 `\n* `42.10.0`\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)","categories":["Runtimes & languages"],"product":"electron","vendor":"electron","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:02:02Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron"},"range":">= 42.3.3, < 42.10.0"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:02:02Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron"},"range":">= 43.0.0-beta.1, < 43.5.0"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:02:02Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron"},"range":">= 44.0.0-alpha.1, < 44.0.0-beta.6"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102677","source_modified_at":"2026-10-02T12:18:18.477Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"electron","vendor":"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"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:15:05.571919148Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron"},"ranges":[{"events":[{"introduced":"42.3.3"},{"fixed":"42.10.0"}],"type":"SEMVER"}],"versions":[]},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:15:05.571919148Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron"},"ranges":[{"events":[{"introduced":"43.0.0-beta.1"},{"fixed":"43.5.0"}],"type":"SEMVER"}],"versions":[]},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:15:05.571919148Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron"},"ranges":[{"events":[{"introduced":"44.0.0-alpha.1"},{"fixed":"44.0.0-beta.6"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:02:02Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron"},"version":"42.10.0"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:02:02Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron"},"version":"43.5.0"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:02:02Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron"},"version":"44.0.0-beta.6"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:15:05.571919148Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron"},"version":"42.10.0"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:15:05.571919148Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron"},"version":"43.5.0"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-qmv3-fv6v-rmhq","source_modified_at":"2026-09-29T18:15:05.571919148Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron"},"version":"44.0.0-beta.6"}],"cvss":7.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00099,"percentile":0.00786,"score_date":"2026-10-23"},"published_at":"2026-09-29T17:43:26.960Z","modified_at":"2026-10-02T12:18:18.477Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-qmv3-fv6v-rmhq","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-09-29T18:02:02Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102677","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-02T12:18:18.477Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-qmv3-fv6v-rmhq","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-09-29T18:15:05.571919148Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102677","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq","tags":["x_refsource_CONFIRM"]},{"source":"CVE 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