CVE-2026-43720
Overview
Advisory: Apple Security Advisory
Impact:
Description: Processing maliciously crafted web content may lead to an unexpected Safari crash
Researchers: Josef Korbel, Gia Bui (@yabeow) from Calif.io
| Attribute | Value |
|---|---|
| CVE | CVE-2026-43720 |
| Bugzilla | 313175 |
| Component | WebCore |
| Bug Class | UAF |
| Severity | medium |
| Commit | 040ef6e21ffac03b… |
| Advisory | Apple Advisory |
Root Cause Analysis
A use-after-free issue was addressed with improved memory management.
Files Changed
Source Files
Source/WebCore/html/HTMLCanvasElement.cppSource/WebCore/html/OffscreenCanvas.cpp
Test Files
LayoutTests/fast/canvas/canvas-getContext-reentrant-expected.txtLayoutTests/fast/canvas/canvas-getContext-reentrant.html