CVE-2026-91748: Race Condition
Chromium CVE-2026-91748: Race condition
Other sources
Race condition in Extensions in Google Chrome on on Mac prior to 153.0.8010.47 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to potentially execute arbitrary code outside the sandbox via UI Interaction. (Chromium security severity: High)
— MITRE
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases](https://chromereleases.googleblog.com/2026)) 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 153.0.4234.46 - Upgrade
Upgrade
Google Chrome (Chromium-based)to a version that resolves this vulnerability.Fixed in 153.0.8010.47 - Compensating control
On affected Mac systems, mitigate UI-interaction risk by restricting extension/renderer compromise opportunities (e.g., limit/disable untrusted extensions and reduce the chance of renderer-compromising content) until Chrome is updated to 153.0.8010.47 or later.
Event History
Frequently Asked Questions
Which systems are affected?
The issue affects Google Chrome on Mac versions before 153.0.8010.47. The provided information does not identify impact on other operating systems.
What must an attacker do to exploit this issue?
An attacker must first compromise the renderer process and then use social engineering involving UI interaction. Successful exploitation could allow arbitrary code execution outside Chrome's sandbox.
Is this exploitable through a renderer compromise alone?
No. The description states that exploitation also requires social engineering and UI interaction after the renderer process has been compromised.
What version addresses the issue?
Update Google Chrome on Mac to version 153.0.8010.47 or later.