CVE-2026-17710 is a high-severity vulnerability in Google Chrome on macOS affecting versions prior to 151.0.7922.72. The flaw stems from an inappropriate implementation in the MHTML component of Chrome. A remote attacker who has already compromised the renderer process could exploit this vulnerability to perform a sandbox escape. The attack vector requires a crafted HTML page to trigger the vulnerability. This is classified as High severity by the Chromium security team. The issue has been addressed in the stable channel update released for desktop. Users are advised to update to Chrome version 151.0.7922.72 or later on Mac to mitigate the risk.