← WebKit Silent-Fix Report — 2026-W21
62fb864bff [Site Isolation] Ensure FrameInfoData.documentID is populated when posting script messages from Document
severity low
class LogicError
confidence 0.40
WebKit UserContent / Site Isolation
Primitive: missing documentID in script-message frame info
Triage note: Ensures frame/document identity is attached to posted messages under site isolation; correctness of isolation routing but no direct memory-safety primitive shown.
Triage note: Ensures frame/document identity is attached to posted messages under site isolation; correctness of isolation routing but no direct memory-safety primitive shown.
Security-relevant, below the exploitable-grade bar for a full root-cause writeup. The triage verdict is above; the side-by-side patch is below.
Before / after
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