Bug 2455024 (CVE-2026-34778) - CVE-2026-34778 Electron: Electron: Integrity issue due to IPC channel spoofing by a service worker
Summary: CVE-2026-34778 Electron: Electron: Integrity issue due to IPC channel spoofin...
Keywords:
Status: NEW
Alias: CVE-2026-34778
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2455437 2455438
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-04 01:01 UTC by OSIDB Bzimport
Modified: 2026-04-06 16:16 UTC (History)
0 users

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Description OSIDB Bzimport 2026-04-04 01:01:29 UTC 
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, a service worker running in a session could spoof reply messages on the internal IPC channel used by webContents.executeJavaScript() and related methods, causing the main-process promise to resolve with attacker-controlled data. Apps are only affected if they have service workers registered and use the result of webContents.executeJavaScript() (or webFrameMain.executeJavaScript()) in security-sensitive decisions. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0.
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