CVE-2026-5901 and is rated Medium severity with a CVSS score of 6.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: Apr 10, 2026
Release Notes
Vendor-listed releases
147.0.3912.60
CISA KEVNot listedBased on the latest collected catalog
EPSS0.1%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-5901?
Insufficient policy enforcement in DevTools in Google Chrome prior to 147.0.7727.55 allowed an attacker who convinced a user to install a malicious extension to bypass enterprise host restrictions for cookie modification via a crafted Chrome Extension. (Chromium security severity: Low)