Prototype Pollution in Electron

CVE-2026-70610

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4, objects copied across the contextBridge boundary from untrusted content could carry…

Vulnerability class: Prototype Pollution

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

  • Electron — versions < 39.8.9, >= 40.0.0-alpha.1, < 40.9.2, >= 41.0.0-alpha.1, < 41.2.2

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-70610?
CVE-2026-70610 is a medium-severity vulnerability in Electron, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.4/10. Published 2026-08-05.
How severe is CVE-2026-70610?
Medium severity. CVSS v3 base score is 5.4 out of 10.