CVE-2024-49761 REXML ReDoS vulnerability

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between & and x...; in a hex numeric character reference &x...;. This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML...