CVE-2021-1252 <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1252>: Fix for Excel XLM parser infinite loop. Affects 0.103.0 and 0.103.1 only. CVE-2021-1404 <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1404>: Fix for PDF parser buffer over-read; possible crash. Affects 0.103.0 and 0.103.1 only. CVE-2021-1405 <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1405>: Fix for mail parser NULL-dereference crash. Affects 0.103.1 and prior. Fix possible memory leak in PNG parser. FreshClam: Deprecate the SafeBrowsing config option. The SafeBrowsing option will no longer do anything. FreshClam: Improved HTTP 304, 403, & 429 handling. Fix the FreshClam mirror-sync issue where a downloaded database is "older than the version advertised."