Live › vulnerability › CVE-2026-121253
A missing authorization check in Chrome's DevTools lets a remote attacker, using social engineering and a crafted Chrome extension, bypass site isolation. Chromium rates the severity Low.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-11-03 21:19 UTC. All times on this page are UTC.
Anyone running Google Chrome older than 157.0.8103.38. Exploitation needs a person to be tricked into installing a crafted extension, so managed browsers that restrict extension installs are less exposed. unknown for any further configuration detail.
No product ranges from the sources yet.
chrome://settings/help and compare against 157.0.8103.38.chrome://extensions for anything unexpected.157.0.8103.38 or later.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Missing authorization in DevTools in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to bypass site isolation via a crafted Chrome extension. (Chromium security severity: Low)
This page as .md · .json · in your agent: get_signal("CVE-2026-121253")
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