IBM DataStage on Cloud Pak for Data: Improper authorization allows Redis write
Summary
IBM DataStage on Cloud Pak for Data 5.4.0.0 contains an improper authorization flaw. An unauthenticated remote attacker can write arbitrary data into the shared Redis store under any tenant's key. This can undermine the platform's credential-encryption boundary and allow poisoning of cached flow parameters for any tenant.
Affected
- IBM DataStage on Cloud Pak for Data 5.4.0.0
Fixed in
- Upgrade to 5.4 patch 8 or later, as stated in the CNA record. Fix not yet confirmed by IBM bulletin 7289603; one press article cites 5.4 patch 7, so verify with IBM before relying on it.
Workaround
- Unknown. No IBM-sourced interim mitigation was found. Ask IBM support for supported options.
- Restrict network access to DataStage and Cloud Pak for Data endpoints to known internal ranges.
- Review Redis and platform logs for writes from unexpected sources.
Exploitation
- CISA SSVC: exploitation none, automatable yes, technical impact total.
- Not listed in CISA KEV at time of research.
- EPSS very low (0.00267).
- No public proof of concept or reports of exploitation found; limited search only.
Our recommendation
- Confirm the fixed version on IBM bulletin 7289603 and plan the upgrade to 5.4 patch 8 or later.
- Inventory whether any DataStage on Cloud Pak for Data 5.4.0.0 deployment exists and whether its endpoints are internet-reachable.
- Apply containment measures until patched and monitor Redis logs.
- Re-check NVD and CISA KEV, as the NVD record was still awaiting analysis.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- IBM Security Bulletin 7289603 www.ibm.com
- Vulners CVE record vulners.com
- OpenCVE entry app.opencve.io
- Vulners CVElist record (EPSS) vulners.com
- IBM bulletin on open-source vulnerabilities in DataStage www.ibm.com
- SecurityOnline article on DataStage vulnerabilities securityonline.info
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 30 Oct 2026, 14:10.
Original description (NVD)
IBM DataStage on Cloud Pak for Data 5.4.0.0 allows an unauthenticated user to perform an arbitrary write into shared Redis under any tenant's key. This collapses the platform's credential-encryption boundary and lets an anonymous caller poison any tenant's cached flow parameters.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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