CVE-2019-11713: Mozilla: Use-after-free with HTTP/2 cached stream

Severity: Critical

CVSS Score: 9.8

A use-after-free vulnerability can occur in HTTP/2 when a cached HTTP/2 stream is closed while still in use, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.