CVE-2026-87540: Medium severity Google Google Chrome vulnerability
Chromium CVE-2026-87540: Incorrect authorization in Isolated
Other sources
Incorrect authorization in Isolated in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to spoof UI elements 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
Chromium-based Microsoft Edgeto a version that resolves this vulnerability.Fixed in 153.0.8010.36 - Upgrade
Upgrade
Google Chrometo 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 get a user to open a crafted HTML page remotely. The reported impact is the ability to spoof UI elements.
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 described.