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 an attacker-influenced prototype, enabling prototype-pollution-style attacks against preload code despite context isolation being enabled. Apps are only affected if their preload code accepts object arguments from untrusted content and reads properties from them without own-property checks, while apps that only accept primitive arguments or validate object arguments are not affected. This issue is fixed in 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4.
Fix
Patch, vendor advisory and mitigation references on NVD 9
- https://github.com/electron/electron/commit/17d5d26499cd279fab48f5f26527f8edc02a7713 Patch
- https://github.com/electron/electron/commit/23a6efb714dec80e2cf45d3054d18d701162e4dd Patch
- https://github.com/electron/electron/commit/4ac50292d552fb510eb778392620c85308770a55 Patch
- https://github.com/electron/electron/commit/5b699544cbbed51bedb7c60d75c8c42be5825737 Patch
- https://github.com/electron/electron/pull/51083 Issue Tracking, Patch
- https://github.com/electron/electron/pull/51084 Issue Tracking, Patch
- https://github.com/electron/electron/pull/51085 Issue Tracking, Patch
- https://github.com/electron/electron/pull/51086 Issue Tracking, Patch
- https://github.com/electron/electron/security/advisories/GHSA-ff2p-hmqr-hxm4 Vendor Advisory, Mitigation
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.4 · electronjsNVD modified 2026-10-08 13:53
Affected (CPE criteria) 10
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta3:*:*:*:node.js:*:*
References 13
- https://github.com/electron/electron/commit/17d5d26499cd279fab48f5f26527f8edc02a7713 Patch
- https://github.com/electron/electron/commit/23a6efb714dec80e2cf45d3054d18d701162e4dd Patch
- https://github.com/electron/electron/commit/4ac50292d552fb510eb778392620c85308770a55 Patch
- https://github.com/electron/electron/commit/5b699544cbbed51bedb7c60d75c8c42be5825737 Patch
- https://github.com/electron/electron/pull/51083 Issue Tracking, Patch
- https://github.com/electron/electron/pull/51084 Issue Tracking, Patch
- https://github.com/electron/electron/pull/51085 Issue Tracking, Patch
- https://github.com/electron/electron/pull/51086 Issue Tracking, Patch
- https://github.com/electron/electron/releases/tag/v39.8.9 Release Notes
- https://github.com/electron/electron/releases/tag/v40.9.2 Release Notes
- https://github.com/electron/electron/releases/tag/v41.2.2 Release Notes
- https://github.com/electron/electron/releases/tag/v42.0.0-beta.4 Release Notes
- https://github.com/electron/electron/security/advisories/GHSA-ff2p-hmqr-hxm4 Vendor Advisory, Mitigation