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IBM released a major security bulletin, resolving twenty-five security flaws. These critical IBM DataStage vulnerabilities allow authenticated attackers to write files and execute arbitrary code. The advisory states, “Open source packages are used as part of the overall processing in DataStage on Cloud Pak for Data.”
- Total: 6 CVEs
- Severity: 4 Critical · 2 High
- Actively exploited: None confirmed
- Highest severity: 9.6 (Critical · CVSSv3) — CVE-2026-82100
- Action: Apply the latest security updates now
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| CVE | CVSS (CVSSv3) | Type | Status |
|---|---|---|---|
| CVE-2026-82100 | 9.6 | CWE-22 | Not exploited |
| CVE-2026-82107 | 9.6 | CWE-287 | Not exploited |
| CVE-2026-44990 | 9.3 | CWE-79 | Not exploited |
| CVE-2026-80424 | 9.1 | CWE-22 | Not exploited |
| CVE-2026-81551 | 8.8 | CWE-22 | Not exploited |
| CVE-2026-81207 | 8.5 | CWE-918 | Not exploited |
Why It Matters
Industry estimates show thousands of global organizations use IBM Cloud Pak for Data to run enterprise analytics pipelines. Consequently, security weaknesses in data integration engines present substantial business risks. If threat actors exploit these IBM DataStage vulnerabilities, they can access sensitive data lake storage volumes. Furthermore, attackers can modify mission-critical data transformations and steal cloud credentials across shared environments. In addition, an intruder could disrupt automated ETL workloads, causing severe downtime across corporate data platforms.
How the Attack Works
The vulnerabilities span path traversal, code injection, and authentication flaws. The highest-severity flaw, CVE-2026-16338, holds a 9.9 CVSS score. The advisory states, “IBM DataStage could allow a remote authenticated attacker to perform an arbitrary file write due to improper validation of file paths.” Therefore, attackers can place malicious files directly on the underlying server.
Meanwhile, CVE-2026-82107 enables server-side request forgery. An authenticated tenant can control the scheme, host, and path of outbound network requests. This allows the attacker to query co-tenant services and internal OpenShift cluster interfaces.
Additionally, several flaws involve path traversal. For example, CVE-2026-81551 allows attackers to write or delete files on shared storage. The advisory warns that “DataStage on Cloud Pak for Data could allow a remote authenticated attacker to arbitrarily write to or delete files on shared storage due to a path traversal vulnerability.” Other issues involve operating system command injection and XML external entity injection.
Affected Versions
These IBM DataStage vulnerabilities impact IBM DataStage on Cloud Pak for Data version 5.4.0.0. Fortunately, researchers have confirmed no active exploitation in the wild. Moreover, no public proof-of-concept exploits exist at this time.
Patch and Mitigation Steps
Security teams should upgrade their deployments immediately. The vendor urges quick action to protect environments. The advisory states that “IBM strongly recommends addressing the vulnerability now by upgrading DataStage on Cloud Pak for Data.”
Administrators must apply version 5.4 patch 5 or later to eliminate these flaws. You can review full upgrade details in the official IBM security bulletin. Furthermore, administrators should restrict cluster network access and enforce strong tenant isolation until patches are applied.
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