{"id":"CVE-2026-102677","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102677","generatedAt":"2026-10-28T01:53:02.542Z","title":"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.","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.","published":"2026-09-29T18:17:10.000Z","lastModified":"2026-10-08T20:24:31.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"cwe":["CWE-20","CWE-345"],"affected":["electronjs/electron"],"epss":{"score":0.00099,"percentile":0.0081,"date":"2026-10-26","history":[{"date":"2026-09-30","score":0.0009,"percentile":0.00421}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-08T20:45:10.000Z","detail":{"from":"7.8","score":"8.8","severity":"HIGH","fromSeverity":"HIGH"},"summary":"Now scored CVSS 8.8 HIGH (was 7.8)."},{"kind":"new","label":"New CVE","at":"2026-09-29T18:17:10.000Z","detail":{"score":"7.8","severity":"HIGH","publishedAt":"2026-09-29T18:17:09.573Z"},"summary":"New CVE, high severity (CVSS 8.8)."}],"references":[{"url":"https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/pull/52480","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/releases/tag/v42.10.0","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/releases/tag/v43.5.0","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/releases/tag/v44.0.0-beta.6","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102677","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}