Deny ElementInternals.shadowRoot for pre-created shadow roots #25554
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Sep 15, 2020
This was referenced Sep 15, 2020
Per the spec issue [1], this change disallows the use of ElementInternals.shadowRoot for shadow roots created prior to the custom element constructor being run. This protects potentially-closed shadow roots, created outside of the custom element, from being revealed to the custom element itself. (Use case unclear, but this was the request.) [1] WICG/webcomponents#871 Bug: 1042130 Change-Id: I25192256e8b1334d09ea587f29d64f35d4f5f949 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2412470 Commit-Queue: Kouhei Ueno <kouhei@chromium.org> Auto-Submit: Mason Freed <masonfreed@chromium.org> Reviewed-by: Kouhei Ueno <kouhei@chromium.org> Cr-Commit-Position: refs/heads/master@{#807311}
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Per the spec issue [1], this change disallows the use of
ElementInternals.shadowRoot for shadow roots created prior
to the custom element constructor being run. This protects
potentially-closed shadow roots, created outside of the
custom element, from being revealed to the custom element
itself. (Use case unclear, but this was the request.)
[1] WICG/webcomponents#871
Bug: 1042130
Change-Id: I25192256e8b1334d09ea587f29d64f35d4f5f949
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2412470
Commit-Queue: Kouhei Ueno <kouhei@chromium.org>
Auto-Submit: Mason Freed <masonfreed@chromium.org>
Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#807311}