CVE-2026-87471: Incorrect authorization in Google Chrome
Description
CVE-2026-87471 is a high-severity vulnerability in Google Chrome prior to version 153.0.8010.36. It involves incorrect authorization in the ServiceWorker component, allowing a remote attacker who has compromised the renderer process to bypass site isolation by using a crafted HTML page. This vulnerability could lead to high confidentiality and integrity impacts but does not affect availability.
CVSS v3.1
Score 8.1high
Affected software
Chrome
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Google Chrome's ServiceWorker authorization mechanism allows an attacker with control over the renderer process to bypass site isolation protections. Site isolation is a security feature designed to separate different websites into different processes to prevent data leakage. The flaw exists in versions before 153.0.8010.36 and can be exploited via a crafted HTML page to escalate privileges within the browser context.
Potential Impact
Successful exploitation allows an attacker who has already compromised the renderer process to bypass site isolation, potentially leading to unauthorized access to sensitive information from other sites. The confidentiality and integrity of user data can be severely impacted. There is no impact on availability reported.
Mitigation Recommendations
A fix is available in Google Chrome version 153.0.8010.36. Users and administrators should update to this version or later to remediate the vulnerability. Refer to the official Google Chrome stable channel update advisory at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html for details.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-09-08T22:38:03.913Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html","vendor":"Google"}]
Threat ID: 6aa0b172acd9273b498119fd
Added to database: 09/09/2026, 01:08:02 UTC
Last enriched: 09/17/2026, 01:25:22 UTC
Last updated: 10/23/2026, 15:10:15 UTC
Views: 32
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