CVE-2026-17710 is a security vulnerability in Google Chrome on Mac platforms before version 151.0.7922.72. The flaw is due to an inappropriate implementation in the MHTML handling code, which can be exploited by a remote attacker who has compromised the renderer process to escape the browser's sandbox environment. This sandbox escape could allow the attacker to execute code outside the restricted environment, increasing the potential impact of an exploit. The vulnerability is classified under CWE-693 (Protection Mechanism Failure) and has a CVSS v3.1 score of 9.6, reflecting critical severity with network attack vector, low attack complexity, no privileges required, user interaction required, and scope changed with high impact on confidentiality, integrity, and availability.

Successful exploitation of this vulnerability could allow an attacker who has compromised the renderer process to escape the sandbox protections of Google Chrome on Mac. This could lead to execution of arbitrary code with higher privileges than normally allowed within the sandbox, potentially compromising the host system's security. The impact is critical, affecting confidentiality, integrity, and availability of the system.

A fixed version of Google Chrome is available at 151.0.7922.72. Users and administrators should update to this version or later to remediate the vulnerability. The vendor advisory linked confirms the availability of this update. No additional mitigations are specified or required beyond applying the official update.