Detections
Analytics
CVE-2026-70610
medium
Description
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.
References
https://github.com/electron/electron/security/advisories/GHSA-ff2p-hmqr-hxm4
https://github.com/electron/electron/releases/tag/v42.0.0-beta.4
https://github.com/electron/electron/releases/tag/v41.2.2
https://github.com/electron/electron/releases/tag/v40.9.2
https://github.com/electron/electron/releases/tag/v39.8.9
https://github.com/electron/electron/pull/51086
https://github.com/electron/electron/pull/51085
https://github.com/electron/electron/pull/51084
https://github.com/electron/electron/pull/51083
https://github.com/electron/electron/commit/5b699544cbbed51bedb7c60d75c8c42be5825737
https://github.com/electron/electron/commit/4ac50292d552fb510eb778392620c85308770a55
https://github.com/electron/electron/commit/23a6efb714dec80e2cf45d3054d18d701162e4dd
https://github.com/electron/electron/commit/17d5d26499cd279fab48f5f26527f8edc02a7713