Disclosure summary
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.
Source-reported weakness categories
CWE-20, CWE-345
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2026-102677
Open original source · Updated Oct 02, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
GitHub Reviewed Security Advisories · GHSA-qmv3-fv6v-rmhq
Open original source · Updated Sep 29, 2026
Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
Source severity: HIGH / 0
| Ecosystem | Package | Affected range | First patched |
|---|---|---|---|
| npm | electron | >= 42.3.3, < 42.10.0 | 42.10.0 |
| npm | electron | >= 43.0.0-beta.1, < 43.5.0 | 43.5.0 |
| npm | electron | >= 44.0.0-alpha.1, < 44.0.0-beta.6 | 44.0.0-beta.6 |
Original records & references
- NIST NVD record
- CVE Program record
- github.com
- github.com
- github.com
- github.com
- github.com
- github.com
- github.com
- github.com
PUBLISHED 2026-09-29T14:17:09-04:00
MODIFIED 2026-10-02T09:17:19-04:00
INGESTED 2026-10-06T11:43:05-04:00