CVE-2026-106403 Google Chrome - Authorization Bypass

Google Chrome < 155.0.8059.39 contains an authorization bypass caused by incorrect authorization in Accessibility, letting remote attackers who compromised the renderer process bypass site isolation via crafted HTML, exploit requires compromised renderer process.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authorization Bypass
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Published
6 October 2026
Updated
15 October 2026
Weakness
CWE-863

Vendor fix

Update to version 155.0.8059.39 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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