CVE-2015-7581

CVE-2015-7581 is a denial-of-service vulnerability affecting Action Pack in Ruby on Rails versions 4.x before 4.2.5.1 and 5.x before 5.0.0.beta1.1. An attacker can exploit this by leveraging an application's wildcard controller route, leading to superfluous caching and memory consumption. Rated as High severity (CVSS 7.5), it is easily exploitable over the network with no user interaction, resulting in a complete loss of availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.