CVE-2026-87471: High severity Google Google Chrome vulnerability
Chromium CVE-2026-87471: Incorrect authorization in ServiceWorker
Other sources
Incorrect authorization in ServiceWorker in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
— NVD
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
Chromium/Google Chrome (ServiceWorker authorization fix)to a version that resolves this vulnerability.Fixed in 153.0.8010.36
Event History
Frequently Asked Questions
What must an attacker achieve before this vulnerability can be exploited?
The attacker must first compromise the Chrome renderer process. They can then use a crafted HTML page to bypass site isolation.
Which Chrome versions are affected?
Google Chrome versions prior to 153.0.8010.36 are affected.
What security boundary can be bypassed?
The issue allows bypass of Chrome site isolation after renderer-process compromise.