EUVD-2026-43503

Perl versions through 5.43.9 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 delta between the first branch and the shared tail is stored ...

PCRE 'compile_branch()' function heap buffer overflow vulnerability

PCRE Perl Compatible Regular Expressions is a software developer Philip Hazel developed a use of C language written in open source regular expression library. PCRE suffers from a heap buffer overflow vulnerability in compilebranch. This vulnerability allows an attacker to execute arbitrary code i...