The vulnerability stems from cleartext credential transmission in configuration forms. Jenkins plugins typically handle credentials via Secret classes and encrypted form bindings. The advisory explicitly states credentials are stored encrypted but transmitted plaintext, indicating: 1) Global configuration forms send credentials unencrypted during submission 2) Job config.xml generation includes plaintext credentials during configuration. Without code access, we infer vulnerable functions are the credential getters/setters in global (SCTMExecutorGlobalConfig) and job (SCTMExecutorJobConfig) configuration classes that bypass Jenkins' Secret handling during form data serialization.