CVE-2026-91743 is a vulnerability in Google Chrome
Published on September 15, 2026
Race condition in Core in Google Chrome prior to 153.0.8010.47 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Weakness Type
What is a TOCTTOU Vulnerability?
The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state. This weakness can be security-relevant when an attacker can influence the state of the resource between check and use. This can happen with shared resources such as files, memory, or even variables in multithreaded programs.
CVE-2026-91743 has been classified to as a TOCTTOU vulnerability or weakness.
Products Associated with CVE-2026-91743
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Affected Versions
Google Chrome:- Version 153.0.8010.47 and below 153.0.8010.47 is affected.