CVE-2026-87468: Medium severity Google Google Chrome vulnerability
Chromium CVE-2026-87468: Incorrect authorization in Isolated
Other sources
Incorrect authorization in Isolated in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
— MITRE
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 153.0.4234.32 - Upgrade
Upgrade
Google Chrome / Chromium-based Edge (inherits Chromium)to a version that resolves this vulnerability.Fixed in 153.0.8010.36
Event History
Frequently Asked Questions
Which Chrome versions are affected?
Google Chrome versions prior to 153.0.8010.36 are affected. Update to 153.0.8010.36 or later.
What does an attacker need to exploit this issue?
The attacker needs to cause a user to load a crafted HTML page remotely. The issue could then be used to bypass site isolation.
Are users exposed through ordinary web browsing?
Yes. Because exploitation is triggered by a crafted HTML page, users may be exposed when they visit attacker-controlled or otherwise malicious web content.