The vulnerability documentation explicitly identifies DbAuditPublisherDescriptorImpl#doTestJdbcConnection as the vulnerable method through multiple authoritative sources (CVE description, GHSA advisory, and Jenkins security advisory). The CWE-862 classification confirms this is an authorization bypass issue. Form validation methods in Jenkins typically require POST requests and permission checks, both of which were missing here. The function's purpose (testing JDBC connections) combined with the missing security controls creates a clear SSRF vector.