chore: cherry-pick 1 changes from chromium#51904
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dsanders11
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Jun 6, 2026
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Backports the following changes:
2cdb07c74d06from chromium — Enable ServiceWorkerStaticRouterCORPCheck and OpaqueCheck by default (495999481, CVE-2026-9115; 497436273, CVE-2026-9116)The enforcement code for both CVEs is already in Chromium 148.0.7778.218, but the feature flags default off and Chrome enabled them on stable via Finch, which Electron does not have. This flag flip makes the in-tree fixes active.
All other CVEs in the Chrome 148.0.7778.178 stable release were verified already present in the 42-x-y tree. Intentionally not backported:
7900197(QUIC follow-up hardening) and7718888(ui/gfx follow-up hardening) — landed on main after the M148 branch cut and were never merged to M148 by Chrome; the fixes Chrome shipped for CVE-2026-9114 and CVE-2026-9117 are already in-tree.7765503(CVE-2026-9123) — touches onlychromecast/media/, which Electron does not compile.Notes: Security: backported fixes for CVE-2026-9115, CVE-2026-9116.