CVE-2026-82110: IBM DataStage Path Traversal Vulnerability

CVE-2026-82110 Overview

CVE-2026-82110 is a path traversal vulnerability in IBM DataStage on Cloud Pak for Data version 5.4.0.0. The flaw stems from improper validation of pathname input [CWE-22]. A remote authenticated attacker can exploit this weakness to execute arbitrary code on the affected system. The vulnerability carries network-based exploitability with low attack complexity and requires only low-privilege credentials.

Critical Impact
Authenticated attackers can traverse directory boundaries to write or access files outside intended paths, leading to arbitrary code execution with scope change affecting confidentiality, integrity, and availability.

Affected Products

IBM DataStage on Cloud Pak for Data 5.4.0.0
Deployments using cpe:2.3:a:ibm:datastage_on_cloud_pak_for_data:5.4.0
Environments integrating DataStage pipelines on IBM Cloud Pak for Data

Discovery Timeline

2026-10-12 - CVE-2026-82110 published to the National Vulnerability Database (NVD)
2026-10-14 - Last updated in NVD database
IBM Advisory - Published at IBM Support Page for Node 7288649

Technical Details for CVE-2026-82110

Vulnerability Analysis

The vulnerability resides in path handling logic within IBM DataStage on Cloud Pak for Data 5.4.0.0. The application fails to properly sanitize user-supplied pathname input before processing file operations. Attackers can supply crafted path sequences containing traversal elements such as ../ to break out of intended directory boundaries.

Because the flaw leads to arbitrary code execution, successful exploitation grants an attacker the ability to run commands within the application context. The scope change indicates that compromise can extend beyond the vulnerable component into other parts of the Cloud Pak for Data environment. Exploitation requires authentication, but only low-privilege credentials suffice.

Root Cause

The root cause is improper validation of pathname during file operations, categorized under [CWE-22] Improper Limitation of a Pathname to a Restricted Directory. The application accepts path input without canonicalizing it or enforcing allowlists of permitted directories. This design gap allows attacker-controlled input to resolve to arbitrary locations on the underlying file system.

Attack Vector

An authenticated attacker submits a request containing a malicious pathname to an exposed DataStage endpoint. The traversal sequence redirects file read or write operations to attacker-chosen locations. By writing executable content to a location processed by the server or overwriting trusted files, the attacker achieves arbitrary code execution. The attack is remotely exploitable over the network and requires no user interaction.

See the IBM Support Page for Node 7288649 for vendor-specific technical details.

Detection Methods for CVE-2026-82110

Indicators of Compromise

Requests to DataStage endpoints containing ../, ..\, URL-encoded %2e%2e%2f, or double-encoded traversal sequences in pathname parameters
Unexpected file writes under DataStage runtime directories or outside normal project paths
New or modified executable files, scripts, or configuration files in Cloud Pak for Data pod volumes
Authenticated user sessions issuing unusual file management API calls at atypical hours

Detection Strategies

Inspect application and reverse proxy logs for pathname parameters containing traversal patterns
Correlate authenticated API requests with filesystem modification events on DataStage pods
Baseline normal DataStage file operations and alert on deviations in target directories
Monitor for process executions spawned by the DataStage service account outside expected binaries

Monitoring Recommendations

Enable verbose audit logging on IBM Cloud Pak for Data and forward logs to a centralized SIEM
Deploy runtime workload protection on Kubernetes nodes hosting DataStage containers
Track outbound connections from DataStage pods to detect post-exploitation command-and-control
Review IAM activity for unexpected privilege use by low-privileged DataStage accounts

How to Mitigate CVE-2026-82110

Immediate Actions Required

Apply the patch referenced in the IBM Support Page for Node 7288649 as soon as possible
Audit all authenticated DataStage accounts and revoke unused or over-privileged credentials
Restrict network access to the DataStage interface to trusted administrative networks only
Review recent logs for traversal patterns or unexpected file writes that may indicate prior exploitation

Patch Information

IBM has published a security bulletin addressing CVE-2026-82110. Administrators running IBM DataStage on Cloud Pak for Data 5.4.0.0 should consult the IBM Support Page for Node 7288649 for the fixed version and upgrade instructions. Apply the vendor patch in a test environment before promoting to production.

Workarounds

Enforce strict network segmentation around Cloud Pak for Data clusters and block external exposure of DataStage endpoints
Require multi-factor authentication for all accounts with DataStage access to reduce credential-based exploitation
Enable Kubernetes read-only root filesystems and seccomp profiles on DataStage pods to limit write locations
Use Web Application Firewall (WAF) rules to block requests containing path traversal sequences until the patch is applied

bash

# Example WAF rule concept to block traversal patterns
# ModSecurity example - adjust for your environment before deployment
SecRule REQUEST_URI|ARGS "@rx (\.\./|\.\.\\|%2e%2e%2f|%2e%2e/|\.\.%2f)" \
    "id:1026821100,phase:2,deny,status:403,msg:'Path traversal attempt - CVE-2026-82110'"