Electron up to 41.10.5/42.9.1/43.4.0/44.0.0-beta.4 Protocol cross-domain policy

Summaryinfo

A vulnerability identified as problematic has been detected in Electron up to 41.10.5/42.9.1/43.4.0/44.0.0-beta.4. This issue affects the function protocol.registerFileProtocol/protocol.registerHttpProtocol of the component Protocol Handler. Performing a manipulation results in cross-domain policy. This vulnerability is known as CVE-2026-102675. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Electron up to 41.10.5/42.9.1/43.4.0/44.0.0-beta.4. This affects the function protocol.registerFileProtocol/protocol.registerHttpProtocol of the component Protocol Handler. The manipulation with an unknown input leads to a cross-domain policy vulnerability. CWE is classifying the issue as CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. This is going to have an impact on confidentiality. The summary by CVE is:

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, responses served through protocol.registerFileProtocol or protocol.registerHttpProtocol for a custom scheme registered with supportFetchAPI enabled but corsEnabled disabled could remain script-readable across origins. This residual issue completes the remediation for CVE-2026-70604. Applications are affected only when they expose such a scheme and load untrusted content in the same session. Schemes intentionally registered with corsEnabled enabled remain cross-origin readable by design. This issue is fixed in versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-102675 since 09/29/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 41.10.6, 42.9.2, 43.4.1 or 44.0.0-beta.5 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Electron

Version

• 41.10.0
• 41.10.1
• 41.10.2
• 41.10.3
• 41.10.4
• 41.10.5
• 42.9.0
• 42.9.1
• 43.0
• 43.1
• 43.2
• 43.3
• 43.4.0
• 44.0.0-beta.0
• 44.0.0-beta.1
• 44.0.0-beta.2
• 44.0.0-beta.3
• 44.0.0-beta.4

Website

• Product: https://github.com/electron/electron/

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