CVE-2026-87466: Incorrect authorization in Google Chrome
CVE-2026-87466 is a medium severity vulnerability in Google Chrome prior to version 153.0.8010.36. It involves incorrect authorization in Workers, allowing a remote attacker to bypass the web origin policy via a crafted HTML page. This flaw could potentially enable unauthorized access to web resources that should be restricted by origin policy. The issue affects Chrome desktop versions before 153.0.8010.36. No CVSS score is provided, and no explicit patch or remediation level is confirmed from the vendor advisory. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability in Google Chrome concerns incorrect authorization handling within Workers, which are background scripts that run separately from web pages. The flaw allows a remote attacker to bypass the web origin policy by crafting a malicious HTML page, potentially enabling unauthorized access to data or actions restricted by origin boundaries. The vulnerability affects Chrome versions prior to 153.0.8010.36. The vendor advisory linked does not explicitly confirm patch availability or remediation status. The issue is classified as medium severity by Chromium security.
Potential Impact
The impact of this vulnerability is a bypass of the web origin policy, which is a fundamental security control that isolates web content from different origins. Bypassing this policy can lead to unauthorized access to sensitive information or functionality across origins. However, the severity is rated medium, indicating that while the flaw is significant, it may require specific conditions or have limited exploitability. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html for current remediation guidance. Until official fixes are confirmed, users should apply the latest Chrome updates as they become available. No vendor advisory states that no action is required or that the issue is already mitigated.
CVE-2026-87466: Incorrect authorization in Google Chrome
Description
CVE-2026-87466 is a medium severity vulnerability in Google Chrome prior to version 153.0.8010.36. It involves incorrect authorization in Workers, allowing a remote attacker to bypass the web origin policy via a crafted HTML page. This flaw could potentially enable unauthorized access to web resources that should be restricted by origin policy. The issue affects Chrome desktop versions before 153.0.8010.36. No CVSS score is provided, and no explicit patch or remediation level is confirmed from the vendor advisory. There are no known exploits in the wild at this time.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Google Chrome concerns incorrect authorization handling within Workers, which are background scripts that run separately from web pages. The flaw allows a remote attacker to bypass the web origin policy by crafting a malicious HTML page, potentially enabling unauthorized access to data or actions restricted by origin boundaries. The vulnerability affects Chrome versions prior to 153.0.8010.36. The vendor advisory linked does not explicitly confirm patch availability or remediation status. The issue is classified as medium severity by Chromium security.
Potential Impact
The impact of this vulnerability is a bypass of the web origin policy, which is a fundamental security control that isolates web content from different origins. Bypassing this policy can lead to unauthorized access to sensitive information or functionality across origins. However, the severity is rated medium, indicating that while the flaw is significant, it may require specific conditions or have limited exploitability. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html for current remediation guidance. Until official fixes are confirmed, users should apply the latest Chrome updates as they become available. No vendor advisory states that no action is required or that the issue is already mitigated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-09-08T22:37:52.077Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html","vendor":"Google"}]
Threat ID: 6aa0b170acd9273b49810f92
Added to database: 09/09/2026, 01:08:00 UTC
Last enriched: 09/09/2026, 03:53:09 UTC
Last updated: 09/09/2026, 03:53:09 UTC
Views: 1
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