CVE-2021-29960
Firefox used to cache the last filename used for printing a file. When generating a filename for printing, Firefox usually suggests the web page title. The caching and suggestion techniques combined may have lead to the title of a website visited during private browsing mode being stored on disk. This vulnerability affects Firefox < 89. Date published : 2021-06-24 https://security.gentoo.org/glsa/202107-09