This update for Mozilla Thunderbird to version 52.5.2 fixes the following vulnerabilities: - CVE-2017-7846: JavaScript Execution via RSS in mailbox:// origin (bsc#1074043) - CVE-2017-7847: Local path string can be leaked from RSS feed (bsc#1074044) - CVE-2017-7848: RSS Feed vulnerable to new line Injection (bsc#1074045) - CVE-2017-7829: From address with encoded null character is cut off in message header display (bsc#1074046)