← WebKit — 2026-W39
c584246121e006a3bf3bbc39e3a9f9a3444bb0f3 [Navigation API] preventDefault() must cancel a cross-site process-swapping navigation under Site Isolation
not a security fix
confidence 0.15
signal score 13.81
Source/WebCore/loader
Classified as not security-relevant.
Triage note: Adds PendingNavigateEventIdentifier so the UIProcess can ask the source web process to dispatch (and possibly cancel) the pending navigate event before continuing a cross-process navigation, with identifier matching in takePendingDispatchNavigateEvent. Navigation API correctness/feature plumbing; the lost-reply path is handled gracefully. No memory-safety/logic security bug.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.
Triage note: Adds PendingNavigateEventIdentifier so the UIProcess can ask the source web process to dispatch (and possibly cancel) the pending navigate event before continuing a cross-process navigation, with identifier matching in takePendingDispatchNavigateEvent. Navigation API correctness/feature plumbing; the lost-reply path is handled gracefully. No memory-safety/logic security bug.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.
Structural signals: smartptr_member_added (+6.47), null_guard (+2.59), uaf_lifetime (+4.75), area:Source/WebCore/loader (+2.0), large_churn (-2.0)
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