Medium severity · published Aug 5, 2026
CVE-2026-70609
Electron: DevTools JavaScript Injection via Unsanitized Dock State Parameter
5.7
CVSS
0.5%
EPSS
No
On KEV
Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1, the mode option of webContents.openDevTools() was not sanitized before use by the DevTools frontend. If an attacker can influence this value, script under their control may run in the DevTools context, which in unsandboxed configurations has access to Node.js, including when untrusted input reaches the mode argument of openDevTools() or untrusted content calls openDevTools() on a webview it embeds. This issue is fixed in 39.8.7, 40.9.0, 41.2.0, and 42.0.0-beta.1.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
electron · electron
< 39.8.7; >= 40.0.0-alpha.1, < 40.9.0; >= 41.0.0-alpha.1, < 41.2.0; >= 42.0.0-alpha.1, < 42.0.0-beta.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-70609
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-70609
Patch
https://github.com/electron/electron/commit/04614eed17986bddc43eb509ec870424ee6a47d1
Patch
https://github.com/electron/electron/commit/2046ae87731d80a7b535512ae19acb529e10e33b
Patch
https://github.com/electron/electron/commit/969741f9f847c5c583f6bbc63ca22549dbd954ce
Patch
https://github.com/electron/electron/commit/efc4d3c6b6f1c04f658ca0d9d2512dcfe78eb7ba
Issue Tracking
https://github.com/electron/electron/pull/50665
Issue Tracking
https://github.com/electron/electron/pull/50666
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