CVE-2026-64780
Overview
Advisory: Apple Security Advisory
Impact:
Description: Processing maliciously crafted web content may lead to an unexpected Safari crash
Researchers: OpenAI Codex Security - Amy Burnett
| Attribute | Value |
|---|---|
| CVE | CVE-2026-64780 |
| Bugzilla | 316918 |
| Component | JSC |
| Bug Class | LogicError |
| Severity | medium |
| Commit | 9a17cd1100ad6cd4… |
| Advisory | Apple Advisory |
Root Cause Analysis
The issue was addressed with improved checks.
Files Changed
Source Files
Source/JavaScriptCore/b3/B3Procedure.cppSource/JavaScriptCore/b3/B3Procedure.hSource/JavaScriptCore/wasm/WasmOMGIRGenerator.cpp
Test Files
JSTests/wasm/stress/inline-wasm-simd-into-non-simd.js