Savon is a Ruby SOAP client. From 0.9.8 until 2.17.2, Savon::Model .all_operations interpolates attacker-controlled WSDL operation names into Ruby source passed to module_eval, allowing Ruby code execution in the application process. This issue is fixed in version 2.17.2.
https://github.com/savonrb/savon/security/advisories/GHSA-mx5j-mp4f-g8jg
https://github.com/savonrb/savon/releases/tag/v2.17.2
https://github.com/savonrb/savon/commit/8f22eb543e7436f6247172c9be47e22792d375e9