CVE-2026-87466: Medium severity Google Chrome vulnerability
Chromium CVE-2026-87466: Incorrect authorization in Workers
Other sources
Incorrect authorization in Workers in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy 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 (Workers)to a version that resolves this vulnerability.Fixed in 153.0.8010.36
Event History
Frequently Asked Questions
Who is exposed to this issue?
Users of Google Chrome versions earlier than 153.0.8010.36 are affected. Exploitation requires the user to load an attacker-crafted HTML page.
What can an attacker do if exploitation succeeds?
A remote attacker can bypass the browser's web origin policy. The issue is rated Medium severity by Chromium.
How can I remediate the issue?
Update Google Chrome to version 153.0.8010.36 or later.