GHSA-C2F4-JGMC-Q2R5 REXML has DoS condition when parsing malformed XML file

Impact The REXML gems from 3.3.3 to 3.4.1 have a DoS vulnerability when parsing XML containing multiple XML declarations. If you need to parse untrusted XMLs, you may be impacted to these vulnerabilities. Patches REXML gems 3.4.2 or later include the patches to fix these vulnerabilities...