CVE-2026-87508: Medium severity Google Google Chrome vulnerability
Chromium CVE-2026-87508: Incorrect authorization in Loader
Other sources
Incorrect authorization in Loader 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
Google Chrome/Chromium-based browsers (Loader)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 running Google Chrome versions earlier than 153.0.8010.36 are affected. Exploitation requires a user to load an attacker-crafted HTML page remotely.
What capability could an attacker gain?
A remote attacker could bypass the web origin policy, which is intended to isolate content from different web origins.
How can I determine whether remediation is needed?
Check the installed Google Chrome version. Versions prior to 153.0.8010.36 require updating to address this issue.