CVE-2026-70606

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 40.10.6, 41.9.1, 42.5.1, and 43.0.0, when a custom protocol handler returned a ProtocolResponse with a url and no session, Electron made the upstream request through defaultSession instead of the session that handled the protocol. A cached response could then be reused across otherwise isolated session partitions. Apps that use ProtocolResponse.url, omit ProtocolResponse.session, and rely on separate sessions to isolate content are affected. This issue is fixed in versions 40.10.6, 41.9.1, 42.5.1, and 43.0.0.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/electron/electron/security/advisories/GHSA-r4w5-6pfg-jxp5

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-05 16:17

Updated : 2026-09-08 20:44

NVD link : CVE-2026-70606

Mitre link : CVE-2026-70606

CVE.ORG link : CVE-2026-70606

JSON object : View

Products Affected

No product.

CWE

CWE-668

Exposure of Resource to Wrong Sphere

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