CVE-2024-10466 is a vulnerability in Firefox and Thunderbird where a specially crafted push message sent by a remote server could hang the parent process, causing the browser to become unresponsive. This issue affects Firefox versions prior to 132, Firefox ESR prior to 128.4, Thunderbird prior to 128.4, and Thunderbird prior to 132. The vulnerability has been assigned a high severity rating with a CVSS score of 7.5. Mozilla has fixed this issue in Firefox 132, Firefox ESR 128.4, Thunderbird 132, and Thunderbird 128.4.