CVE-2026-102677: Electron: Sandboxed preload code cache can be poisoned by a compromised renderer

The cache Electron keeps for sandboxed preload scripts did not verify that a cached entry matched the preload it was served for. A compromised renderer could use this to run its own code in the preload context on a later load.

Apps are only affected if they load untrusted content. Apps that do not load untrusted content are not affected.