CVE-2026-70606
CVE-2026-70606 · Electron: ProtocolResponse.url reuses the default session cache instead of the registering session
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 5.9 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
electron
- Versions
- >= 40.0.0-alpha.1, < 40.10.6: Affected
- >= 41.0.0-alpha.1, < 41.9.1: Affected
- >= 42.0.0-alpha.1, < 42.5.1: Affected
- >= 43.0.0-alpha.1, < 43.0.0: Affected
No fix published
electron npm
- Affected ranges
- SEMVER: ≥ 43.0.0-alpha.1, < 43.0.0
Update to 43.0.0
electron npm
- Affected ranges
- SEMVER: ≥ 42.0.0-alpha.1, < 42.5.1
Update to 42.5.1
electron npm
- Affected ranges
- SEMVER: ≥ 41.0.0-alpha.1, < 41.9.1
Update to 41.9.1
electron npm
- Affected ranges
- SEMVER: ≥ 40.0.0-alpha.1, < 40.10.6
Update to 40.10.6