🕵️ Mozilla Firefox ESR/Thunderbird up to 52.7 Lightweight Theme Message Header denial of service

A vulnerability has been found in Mozilla Firefox ESR and Thunderbird up to 52.7 (Mail Client Software) and classified as problematic. This vulnerability affects an unknown code block of the component Lightweight Theme. Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability. ...