
On 9 November 2026 Google released a Chrome security update that fixes CVE-2026-125350, a high-severity use-after-free flaw in Chrome's XML code. Google says it "is aware that an exploit for CVE-2026-125350 exists in the wild", which makes it a zero-day: attackers were using it before the fix was out. An anonymous researcher reported it on 6 November.
Fixed versions: Chrome 157.0.8103.50/.51 for Windows and Mac, and 157.0.8103.50 for Linux. Older versions are affected.
The update fixes nine flaws in total: seven rated High and two Medium, none Critical. They include a second XML use-after-free (CVE-2026-125346), a type confusion bug in the V8 JavaScript engine (CVE-2026-125344), and bugs in Compositing, the GPU code, WebGL and FileSystem. Google has reported exploitation only for CVE-2026-125350.
What is not known: Google has not said how the attacks work, who is behind them or who was targeted. It usually keeps bug details restricted until most users have the fix.
Google says the update rolls out over "days/weeks", so Chrome may not have installed it yet. Other browsers built on Chromium, such as Edge, Brave and Opera, need their own updates.

