whsieh
WebKit contributor
Summary
whsieh works almost exclusively on WebKit's Text Extraction pipeline — the content-serialization layer behind Safari MCP, desktop-class content emulation on iOS, and Automatically Fix Passwords — with the work split primarily across WebKit and WebCore and occasional Platform touches. Very little is classified as security or hardening, but a recurring thread runs through the ordinary commits: `replacementStrings` redaction failing open, with usernames and email addresses surfacing unredacted, interaction `summary` strings bypassing client-supplied substitutions, and substitution matching later constrained to word boundaries; the same pipeline also handles one-time code and password fields on real login flows. Systematic-variant candidate: redaction here is enforced per-path rather than centrally, so each newly added string-producing path in text extraction is a plausible bypass, and the crash/null-check fixes in the same extraction code (text fields, `attributedStringByReplacingRemoteFrameMarkers`) suggest the traversal reaches nodes in states it doesn't fully expect.
Components
Security Fix History
Hardening Commits
Recent Commits
- 2026-09-17 [Text Extraction] Disabled buttons should emit `disabled` tokens
- 2026-09-15 [Text Extraction] Safari 27 on macOS Tahoe crashes when performing text extraction with text fields
- 2026-09-15 [Text Extraction] Usernames/email addresses are sometimes unredacted when `replacementStrings` is set
- 2026-09-13 [Text Extraction] Include more sibling context to interaction descriptions that only have a single word as rendered text
- 2026-09-04 [Text Extraction] Remove unnecessary `USE(APPLE_INTERNAL_SDK) || (!PLATFORM(WATCHOS) && !PLATFORM(APPLETV))` compile-tim
- 2026-09-04 [Text Extraction] Stale node UID resolution heuristic should surface failure in the case where the resolved node is stal
- 2026-09-03 [Text Extraction] iOS: Override several mouse-related media queries when loading desktop-class content with background t
- 2026-09-03 [Text Extraction] battle.net: one-time code fields are skipped in text extraction results
- 2026-09-03 [Text Extraction] Some checkboxes on google.com are invisible to Safari MCP
- 2026-08-25 [Text Extraction] Add more text context before or after a targeted element that's missing meaningful text context
- 2026-08-24 [Text Extraction] iOS: Automatically Fix Passwords may time out when filling old/new/confirm new passwords when device i
- 2026-08-21 [Text Extraction] Fix maxTouchPoints, touch-related bindings, and screen size when emulating desktop-class content
- 2026-08-20 [Liquid Glass] Subject area in mail compose sometimes flashes when shrinking image down from original size
- 2026-08-19 [Text Extraction] Limit `replacementStrings` substitutions to word boundaries (to reduce false positives when redacting
- 2026-08-17 [Text Extraction] Interaction `summary` strings should not bypass client-specified `replacementStrings`