Description
REXML is an XML toolkit for Ruby. The REXML gems from 3.3.3 to 3.4.1 has a DoS vulnerability when parsing XML containing multiple XML declarations. If you need to parse untrusted XMLs, you may be impacted to these vulnerabilities. The REXML gem 3.4.2 or later include the patches to fix these vulnerabilities.
Problem types
CWE-400: Uncontrolled Resource Consumption
Product status
References
github.com/.../rexml/security/advisories/GHSA-c2f4-jgmc-q2r5
github.com/...ommit/5859bdeac792687eaf93d8e8f0b7e3c1e2ed5c23