CVE-2026-70602 Details
Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, extension tab and scripting APIs were not scoped to the extension's own session. A malicious or compromised extension loaded into one session could navigate, script, and read from windows belonging to a different session. Apps are only affected if they load Chrome extensions via session.loadExtension and rely on separate sessions to isolate that extension from other content. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
A vulnerability exists in Electron versions prior to 39.8.8, 40.0.0-alpha.1 through 40.9.0, 41.0.0-alpha.1 through 41.2.1, and 42.0.0-alpha.1 through 42.0.0-beta.3. The issue arises because extension tab and scripting APIs were not limited to the extension's own session. This flaw allows a malicious or compromised extension in one session to navigate, script, and access windows in another session. Applications are only impacted if they load Chrome extensions via session.loadExtension and use separate sessions to isolate those extensions from other content.
Users can upgrade to Electron versions 39.8.8, 40.9.0, 41.2.1, or 42.0.0-beta.3 to address this vulnerability. For applications that rely on session separation, it is recommended to only load extensions from trusted sources.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 5, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/electron/electron/security/advisories/GHSA-m55f-7gqj-fr98 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| electronjs electron | < 39.8.8 >= 40.0.0, < 40.9.0 >= 41.0.0, < 41.2.1 42.0.0 alpha1 42.0.0 alpha2 42.0.0 alpha3 42.0.0 alpha4 42.0.0 alpha5 42.0.0 alpha6 42.0.0 beta1 42.0.0 beta2 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 8, 2026 | Initial Analysis | [email protected] |
| Aug 5, 2026 | CVE Modified | CISA-ADP |
| Aug 5, 2026 | New CVE Received | [email protected] |