chrome

Posts tagged chrome

August 27, 2026·chrome

Check Your Motor Oil Before Turbocharging: CVE-2026-7899, When V8's Optimization Engine Builds Up Carbon

In April, we reported a severe vulnerability in V8, the JavaScript and WebAssembly engine used by Chrome. This vulnerability enabled remote code execution in Chrome’s renderer process. This writeup will cover the technical details of the vulnerability. The research was performed with internal tool Mnemosyne, by Project WhatForLunch browser security team at NebuSec, led by @xia0o0o0o and @rcv

10 min read

June 29, 2026·chrome

Longinus: 2 Boundaries in One Bug, Piercing Chrome’s Renderer and V8 Sandbox with a Single Vulnerability, CVE-2026-6307

Chrome V8 JavaScript engine features a heap sandbox to prevent an attacker from writing outside of the sandbox region with only a vulnerability in their JavaScript engine. However, Nebu discovered a special bug in the JIT compiler that allows an attacker to gain arbitrary read/write primitives in sandbox and even escape the sandbox to write outside of it solely on its own. This writeup will cover the technical details of the vulnerability.

19 min read

May 7, 2026·chrome

How an Omitted Write Barrier in V8 Turns Into RCE in Chrome: CVE-2026-5865

In March, our system detected a severe vulnerability in V8, the JavaScript engine used by Chrome. This vulnerability enabled remote code execution against billions of Chrome users worldwide.

15 min read