{"cve":"CVE-2026-102677","nvd":{"published":"2026-09-29T18:17:09.573","modified":"2026-10-08T20:24:30.737","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8},"cwes":["CWE-20","CWE-345"],"references":["https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601","https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3","https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217","https://github.com/electron/electron/pull/52480","https://github.com/electron/electron/releases/tag/v42.10.0"],"products":["electronjs:electron"],"source":"nvd","synced_at":"2026-10-19T22:56:48.555445741+00:00"},"epss":{"cve":"CVE-2026-102677","score":0.00099,"percentile":0.0081,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-qmv3-fv6v-rmhq","url":"https://osv.dev/vulnerability/GHSA-qmv3-fv6v-rmhq","summary":"Electron: Sandboxed preload code cache can be poisoned by a compromised renderer","modified":"2026-09-29T18:15:05.571919148Z","packages":[{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron","ranges":[">=42.3.3 <42.10.0"],"fixed":["42.10.0"]},{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron","ranges":[">=43.0.0-beta.1 <43.5.0"],"fixed":["43.5.0"]},{"ecosystem":"npm","name":"electron","purl":"pkg:npm/electron","ranges":[">=44.0.0-alpha.1 <44.0.0-beta.6"],"fixed":["44.0.0-beta.6"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}