Nebula Security disclosed CVE-2026-6307, a critical vulnerability in Google Chrome that allows an attacker to bypass both the V8 sandbox and the renderer process isolation using a single bug. The exploit leverages complex interactions between TurboFan's JIT compilation optimizations and WebAssembly call inlining to achieve arbitrary code execution.
Background
Chrome's security model relies on strict sandboxing to isolate potentially malicious web content from the host system. This research highlights how deep integration between JavaScript engines and WebAssembly can create unexpected attack surfaces if boundary checks are insufficient.
- Source
- Lobsters
- Published
- Jun 29, 2026 at 11:00 PM
- Score
- 9.0 / 10