CVE-2026-91709: Type confusion in Google Chrome
Type confusion in ServiceWorker in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
AI Analysis
Technical Summary
CVE-2026-91709 is a type confusion vulnerability in the ServiceWorker implementation of Google Chrome before version 153.0.8010.47. Exploitation requires a crafted HTML page that triggers the flaw, enabling remote code execution inside the browser's sandbox environment. The issue was identified and addressed by the Chrome development team, with an official patch released in version 153.0.8010.47.
Potential Impact
Successful exploitation allows a remote attacker to execute arbitrary code within the sandboxed environment of the browser. This could lead to unauthorized actions within the browser context but does not necessarily imply full system compromise due to sandbox restrictions.
Mitigation Recommendations
Users should update Google Chrome to version 153.0.8010.47 or later, where this vulnerability has been fixed. Applying this official update fully mitigates the risk from this vulnerability.
CVE-2026-91709: Type confusion in Google Chrome
Description
Type confusion in ServiceWorker in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
CVSS v3.1
Score 8.8high
Affected software
Chrome
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-91709 is a type confusion vulnerability in the ServiceWorker implementation of Google Chrome before version 153.0.8010.47. Exploitation requires a crafted HTML page that triggers the flaw, enabling remote code execution inside the browser's sandbox environment. The issue was identified and addressed by the Chrome development team, with an official patch released in version 153.0.8010.47.
Potential Impact
Successful exploitation allows a remote attacker to execute arbitrary code within the sandboxed environment of the browser. This could lead to unauthorized actions within the browser context but does not necessarily imply full system compromise due to sandbox restrictions.
Mitigation Recommendations
Users should update Google Chrome to version 153.0.8010.47 or later, where this vulnerability has been fixed. Applying this official update fully mitigates the risk from this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-09-14T22:51:01.728Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0541751186.html","vendor":"Google"}]
Threat ID: 6aa9aed355bf5e2cf55add08
Added to database: 09/15/2026, 20:47:15 UTC
Last enriched: 09/15/2026, 21:31:29 UTC
Last updated: 09/16/2026, 04:01:23 UTC
Views: 6
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