Auth bypass in Google Chrome

CVE-2026-106384

Missing authorization in SiteIsolation in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: Broken Access Control

Published · last modified .

EPSS exploit prediction

EPSS: 0.002 (7.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Weakness classification (CWE)

References