Internet Bug Bounty: [CVE-2024-35176] DoS vulnerability in REXML

I sent my original report here: https://hackerone.com/reports/2490560
REXML had a vulnerability where repeated > characters in an attribute value took a very long time for the parser to finish.
The wait times increased exponentially the larger the string.

Impact

Reduced performance or Denial of Service was possible where REXML is used to parse user input.
Rails uses REXML to convert XML to a hash, so this was susceptible:

Hash.from_xml(request.body.read)