CVE-2026-87561: Medium severity Google Chrome vulnerability
Chromium CVE-2026-87561: Incorrect authorization in Web Authentication
Other sources
Incorrect authorization in Web Authentication in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy via a crafted Chrome extension. (Chromium security severity: Low)
— 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
Google Chrome (Chromium)to a version that resolves this vulnerability.Fixed in 153.0.8010.36 - Compensating control
Because Microsoft Edge ingests Chromium, ensure Edge is updated to the Chromium fix for CVE-2026-87561 (Web Authentication authorization bypass).
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The issue requires a crafted Chrome extension. The description does not state whether the extension must be installed by the user or how it is delivered.
Which Chrome versions are affected?
Google Chrome versions prior to 153.0.8010.36 are affected. Updating to 153.0.8010.36 or later addresses the affected version range.
What security boundary could be bypassed?
A remote attacker could bypass the web origin policy through the incorrect authorization in Web Authentication. The provided data does not identify specific websites, extension permissions, or authentication flows affected.