DevTools Race Condition: Chrome <154.0.8037.57 Bypasses Site Isolation
CVE-2026-95344 Published on September 29, 2026
Race condition in DevTools in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to bypass site isolation via a crafted Chrome extension. (Chromium security severity: Medium)
Vulnerability Analysis
CVE-2026-95344 is exploitable with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
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-2026-95344 has been classified to as a TOCTTOU vulnerability or weakness.
Products Associated with CVE-2026-95344
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Affected Versions
Google Chrome:- Version 154.0.8037.57 and below 154.0.8037.57 is affected.