Chrome use-after-free in FileSystem can escape the sandbox

high severity · published 2026-10-20

A remote attacker who has already compromised the Chrome renderer process, aided by social engineering, can use a crafted HTML page to trigger a use-after-free in the FileSystem component. This can lead to arbitrary code execution outside the browser sandbox.

Fixed in: 156.0.8078.47

CVE: CVE-2026-113248

Source: NVD

Am I affected?

You are affected if the installed version is older than 156.0.8078.47. Check the version you have and update to 156.0.8078.47 or later. The fixed version is verified against a vendor or advisory source.

Get the fix

FixLane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the FixLane MCP server and call get_fix_prompt with incident id 427 and your operating system.