CVE-2026-80412 in DataStage on Cloud Pak for Data
Summary
by MITRE • 09/24/2026
IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary code due to improper escaping of connector property values during OSH script generation.
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Analysis
by VulDB Data Team • 09/24/2026
The vulnerability identified in IBM DataStage within the Cloud Pak for Data environment, specifically affecting version 5.4.0.0, represents a critical security flaw rooted in insufficient input validation and sanitization mechanisms. This issue arises from improper escaping of connector property values during the generation of Operational Scripting Handler or OSH scripts. In this architecture, user-supplied data is often passed through various layers of processing before being executed by underlying system components. When these inputs are not correctly escaped, they can break out of their intended context and be interpreted as executable code rather than static data strings. This failure in the application logic allows a remote authenticated attacker to inject malicious commands that will subsequently be processed and executed by the server with the privileges associated with the DataStage service account.
From a technical perspective, this flaw is classified under CWE-78 Improper Neutralization of Special Elements used in an OS Command commonly known as Operating System Command Injection or more broadly as CWE-94 Code Injection depending on the specific execution context within the Java-based environment. The vulnerability exploits the trust relationship between the authenticated user and the application backend. Because authentication is required, this does not constitute a remote unauthenticated attack vector but rather highlights the risk of privilege escalation or lateral movement by compromised credentials. An attacker who has obtained valid login credentials can manipulate connector configurations to include shell metacharacters such as semicolons, pipes, or backticks which are then passed directly into system-level commands without adequate filtering. This leads to arbitrary code execution on the host machine running the DataStage engine.
The operational impact of this vulnerability is severe and potentially catastrophic for enterprise data environments. Successful exploitation allows an attacker to execute arbitrary operating system commands with the same privileges as the application process, which typically runs with elevated permissions necessary for accessing databases, file systems, and network resources. This can lead to complete compromise of the underlying infrastructure, including theft or destruction of sensitive data stored within the DataStage pipelines, modification of configuration files to persist access, or use of the compromised server as a pivot point for further attacks against other internal systems. The ability to execute code remotely via authenticated means significantly lowers the barrier for entry compared to unauthenticated exploits but remains highly dangerous in environments where credential theft is common through phishing or insider threats.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. IBM has released patches that address this issue by implementing stricter input validation and proper escaping routines within the OSH script generation module. Organizations should immediately apply these updates to all instances of Cloud Pak for Data version 5.4.0.0 where applicable. In addition to patching, it is crucial to enforce strict least-privilege principles regarding the service accounts used by DataStage processes. These accounts should be restricted from executing arbitrary system commands and limited to only those operations strictly necessary for data integration tasks. Furthermore, implementing Web Application Firewall rules that detect common command injection patterns can provide an additional layer of defense against exploitation attempts while patching is being deployed across the environment.
This vulnerability aligns with MITRE ATT&CK technique T1059 Command and Scripting Interpreter, specifically sub-techniques involving shell commands or operating system APIs. It also reflects CWE-20 Improper Input Validation where the application fails to verify that user input conforms to expected formats before processing. Security teams should monitor for unusual process executions originating from DataStage service accounts and review audit logs for any signs of command injection attempts, such as unexpected spikes in system calls or execution of unfamiliar binaries. Regular security assessments including penetration testing focused on authentication bypasses and injection flaws are recommended to ensure that similar vulnerabilities do not exist elsewhere in the application stack.