Chrome Zero-Day CVE-2026-125350: Google Patches an Exploited XML Flaw in Chrome 157
Chrome zero-day CVE-2026-125350, a use-after-free in XML handling, is exploited in the wild. Google fixed it in Chrome 157.0.8103.50/.51 on 9 November.
Google has patched a Chrome flaw that attackers are already exploiting. In its 9 November stable channel update, Google says it is aware that "an exploit for CVE-2026-125350 exists in the wild". The bug is a use-after-free in Chrome's XML component, rated High. BleepingComputer counts it as the eighth Chrome zero-day exploited in attacks this year. Its list shows four of the seven earlier ones in V8, Chrome's JavaScript engine, the most recent of them CVE-2026-87491 in September.
What is known about the attacks
Almost nothing. An anonymous researcher reported the flaw to Google on 6 November, three days before the fix shipped. Google hasn't said who is using the exploit or against whom, and its release note says bug details may stay restricted until a majority of users are updated. CISA has yet to add CVE-2026-125350 to its Known Exploited Vulnerabilities catalogue.
The same release fixes nine security flaws in total. One of the other eight is a second use-after-free in XML, reported on 12 October by Neonix Security, which Google does not list as exploited.
Microsoft Edge
Microsoft says it is "actively working on releasing a security fix" for Edge. Its newest stable build, 157.0.4341.42 from 5 November, predates Google's patch.
Fixed versions
Update Chrome to 157.0.8103.50 or .51 on Windows and Mac and 157.0.8103.50 on Linux. Google says the rollout will take "the coming days/weeks", so check under Settings, About Chrome and relaunch. Chrome for Android is fixed in 157.0.8103.50. Organisations on the Extended Stable channel should move to 156.0.8078.96, which carries the same fix.


