Security Advisory
CVE-2021-43542
6.5
MEDIUM
Vulnerability Description
Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Published Date
December 8, 2021
Official Source
NIST NVD Advisory