CVE-2026-34778
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| electron | electron | < 38.8.6 | affected |
| electron | electron | >= 39.0.0-alpha.1, < 39.8.1 | affected |
| electron | electron | >= 40.0.0-alpha.1, < 40.8.1 | affected |
| electron | electron | >= 41.0.0-alpha.1, < 41.0.0 | affected |
Weaknesses
- CWE-290: CWE-290: Authentication Bypass by Spoofing
- CWE-345: CWE-345: Insufficient Verification of Data Authenticity
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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