CVE-2019-5420: rubygem-rails: Weak secret token leading to possible code execution

Severity: Critical

CVSS Score: 9.8

A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically generated development mode secret token. This secret token can be used in combination with other Rails internals to escalate to a remote code execution exploit.