whsieh
WebKit contributor
Summary
Primarily works on the WebKit/WebCore boundary for text extraction and UI automation — mapping DOM nodes to stable identifiers, simulating clicks on visually-clickable containers, and exposing those interactions to clients via `WKFrameInfo` and `WKJSHandle` — alongside iOS/macOS editing, selection, and keyboard focus handling. The security work is sparse but sits exactly where this area touches trust boundaries: missing validation of file paths arriving from the web content process in attachment element handling, plus site isolation fixes for pasteboard and DOM paste access across cross-origin subframes. The audit angle: the text-extraction surface is a newly widened client-facing API that resolves attacker-influenced node identifiers and href strings, with lenience explicitly loosened in stale-UID resolution — a good place to probe identifier confusion and cross-frame targeting.
Components
Security Fix History
Hardening Commits
- No hardening commits recorded
Recent Commits
- 2026-08-05 [Text Extraction] Add a way to map node identifier strings to `WKFrameInfo`
- 2026-08-03 [Text Extraction] Make stale node UID resolution heuristics more lenient
- 2026-08-03 [Text Extraction] Treat small, visually-distinct elements as clickable for the purpose of simulating clicks
- 2026-08-03 [Text Extraction] Enforce a stricter truncation policy for link href attribute when describing interactions
- 2026-08-03 [Text Extraction] Include links and link URLs in extracted PDFs
- 2026-07-25 macOS 27: Siri affordance should dismiss immediately after scrolling the selection away from the mouse cursor
- 2026-07-24 [Text Extraction] Automatically Fix Passwords: agent is occasionally unable to click the "05 Settings" link on www.zara.
- 2026-07-23 [UIIntelligenceSupport] iOS: Mark elements that are being previewed by a context menu with `isContextMenuSource`
- 2026-07-22 [iOS 27] REGRESSION (314741@main): Text fields lose focus immediately after showing the keyboard in iPhone Mirroring
- 2026-07-21 [Text Extraction] Simulated clicks should target the innermost descendant in the targeted element
- 2026-07-21 [iOS 27] Mitigate increased hangs under -[WKContentView _internalInvalidateTextEntryContext]
- 2026-07-19 [Text Extraction] Interactions with both text & uid should work as long as the text matches accessibility label
- 2026-07-18 REGRESSION (290497@main): [iOS] Adjusting selection handles in Google search field causes page to autoscroll
- 2026-07-18 [Text Extraction] Add a way for clients to issue interactions by passing in a WKJSHandle
- 2026-07-16 [Site Isolation] Content in cross-origin subframes is missing when copying and pasting