CVE-2026-87577: Medium severity Google Google Chrome vulnerability
Chromium CVE-2026-87577: 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 web origin policy into a privileged page 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 (Isolated)to a version that resolves this vulnerability.Fixed in 153.0.8010.36
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The attacker needs to cause a user to load a crafted HTML page. The issue is remotely exploitable and does not describe a requirement for local access or prior authentication.
Who is exposed?
Users running Google Chrome versions earlier than 153.0.8010.36 are affected. Exploitation targets the browser's handling of web-origin policy when interacting with a privileged page.
What should be done to remediate the issue?
Update Google Chrome to version 153.0.8010.36 or later. The provided information does not identify a configuration workaround if updating cannot be performed immediately.