CVE-2026-13221

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perlstudychunk. When such branches are combined into a trie, the...

PT-2026-57822

Name of the Vulnerable Software and Affected Versions Perl versions prior to 5.44 Description Incorrect regular expression matches occur when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl study chunk. A trie is a specialized tree-like data structure used...