IBM DataStage on Cloud Pak for Data 5.4.0.0 concatenates three caller-supplied strings into a String.format path on the shared /ds-storage RWX PVC and returns the file with no project ACL — pure IDOR plus traversal. Read is constrained to files named job.log/error.log, but DataStage job logs routinely carry connection strings, {dsnextenc} ciphertexts (decryptable via d2-f023), and customer-data row samples. This is the operator's tenant-to-tenant PVC-leakage threat verbatim; MEDIUM→HIGH via threat match.
IBM strongly recommends addressing the vulnerability now by upgrading DataStage on Cloud Pak for Data.
Product(s)Version(s) number and/or range Remediation/Fix/InstructionsDataStage on Cloud Pak for Data5.4.0.0
Upgrade to 5.4 patch 5 or later by following these instructions https://www.ibm.com/docs/en/software-hub/5.4.x .