Unpatched Bug Can Crash Chromium-Based Browsers in Seconds

A critical security flaw in Chromium's Blink rendering engine can crash billions of browsers within seconds. Security researcher Jose Pino discovered the vulnerability and created a proof-of-concept exploit called Brash to demonstrate the bug affecting Chrome, Edge, OpenAI's ChatGPT Atlas, Brave, Vivaldi, Arc, Dia, Opera and Perplexity Comet.

The flaw, reports The Register, exploits the absence of rate limiting on document.title API updates in Chromium versions 143.0.7483.0 and later. The attack injects millions of DOM mutations per second and saturates the main thread. When The Register tested the code on Edge, the browser crashed and the Windows machine locked up after about 30 seconds while consuming 18GB of RAM in one tab. Pino disclosed the bug to the Chromium security team on August 28 and followed up on August 30 but received no response. Google said it is looking into the issue.

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