The vulnerability stems from two key issues: 1) Missing CSRF protection on endpoints handling Service Fabric connections, and 2) Missing permission checks on credential enumeration endpoints. Jenkins plugins typically implement these operations through Stapler HTTP endpoints (doXxx methods). The advisory specifically mentions HTTP endpoints that should require POST requests but don't, and lack permission checks. ServiceFabricManagementEndpoint is the logical location for connection testing and credential management functionality. The high confidence comes from the pattern-matching with standard Jenkins vulnerability patterns and the explicit mention of credential ID enumeration/usage in the advisory.