---
id: CVE-2026-81210
title: >-
  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
summary: >-
  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 t…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-639
vendor: ibm
product: datastage_on_cloud_pak_for_data
affected:
  - datastage_on_cloud_pak_for_data = 5.4.0
published: '2026-09-10'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T00:46:04.780'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81210'
references:
  - url: 'https://www.ibm.com/support/pages/node/7286562'
    label: psirt@us.ibm.com
tags:
  - nvd
  - cve.org
epss: 0.0034
epssPercentile: 0.24827
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T15:07:46.848658Z'
ingestedAt: '2026-09-14T05:46:26.859Z'
---

## Overview

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.

## Affected

- `datastage_on_cloud_pak_for_data = 5.4.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.