The parse() method in the Email::Address module through 1.909 for Perl is vulnerable to Algorithmic complexity on specially prepared input, leading to Denial of Service. Prepared special input that caused this problem contained 30 form-field characters ("\f").

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901873
• http://www.openwall.com/lists/oss-security/2018/06/19/3
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00012.html