Perl Permissions Privileges and Access Controls Vulnerability - CVE-2011-1487
The (1) lc (2) lcfirst (3) uc and (4) ucfirst functions in Perl 5.10.x 5.11.x and 5.12.x through 5.12.3 and 5.13.x through 5.13.11 do not apply the taint attribute to the return value upon processing tainted input which might allow context-dependent attackers to bypass the taint protection mechanism via a crafted string.