CVE-2026-70606Electron: ProtocolResponse.url reuses the default session cache instead of the registering session
Updated under an hour ago ()
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It affects electron and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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 (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
- Weakness (CWE)
- CWE-668
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
electron electron electron:electron (from the name) | from 40.0.0-alpha.1, < 40.10.6; from 41.0.0-alpha.1, < 41.9.1; from 42.0.0-alpha.1, < 42.5.1; from 43.0.0-alpha.1, < 43.0.0 | CNA record |
electronjs electron electronjs:electron | before 40.10.6; from 41.0.0 through 41.9.1; from 42.0.0 through 42.5.1; 43.0.0; 43.0.0; 43.0.0; 43.0.0; 43.0.0 | NVD |
References
- https://github.com/electron/electron/security/advisories/GHSA-r4w5-6pfg-jxp5x-refsource-confirm, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.