Chrome's October update fixes 353 security problems. Update it from inside Chrome

Google released Chrome 156 on October 20, 2026. The update fixes 353 security problems in the browser.

Six of the fixes cover the most serious kind of problem. Google marks that kind critical.

The broken parts handle pictures, page styles, video calls, and help features inside the browser.

A flaw that serious can let a harmful page make your computer follow the attacker's instructions.

Google has not said that anyone used these problems to attack people.

The update reaches computers in stages. Some people get it days after others.

Google is already giving some people the next version, 157. Copies on older versions stay at risk until they update.

This report concerns everyone who uses the Chrome browser on a computer: Windows, Mac, or Linux.

Chrome on phones updates through the app stores. This report describes the computer version.

The flaws live in the browser itself. Any page you open can try to use them.

Chrome usually updates itself when you close and reopen it. Your copy can already have the fix.

The risk continues until your copy finishes updating.

Google keeps the flaw details secret until most users have the fix. That is its standard practice.

The release page says nothing about real attacks with these problems.

We do not know how many computers already have the update, because the rollout is gradual.

Google has not published a count of people affected by these flaws.