CVE-2026-81208Network attack vector

Cross-tenant credential disclosure via decryption oracle

Published Sep 23, 2026 · Updated Sep 23, 2026

Credential disclosure in IBM DataStage on Cloud Pak for Data 5.4.0.0 allows remote authenticated users to recover other tenants' secrets. The pull endpoint decrypts supplied {dsnextenc} or {encval} ciphertext with the shared DSNEXT_SEC_KEY, then re-encrypts it under a caller-selected AES key and IV. Any authenticated user who obtains exposed ciphertext can recover connection passwords, Git access tokens, and IAM API keys across tenants.

CVSS severity7.7
High
EPSS probability0.23%
Next 30 days · Oct 18, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential disclosure in IBM DataStage on Cloud Pak for Data 5.4.0.0 allows remote authenticated users to recover other tenants' secrets. The pull endpoint decrypts supplied {dsnextenc} or {encval} ciphertext with the shared DSNEXT_SEC_KEY, then re-encrypts it under a caller-selected AES key and IV. Any authenticated user who obtains exposed ciphertext can recover connection passwords, Git access tokens, and IAM API keys across tenants.

The record

CVE
CVE-2026-81208
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
IBM
Product
IBM DataStage on Cloud Pak for Data
Classifications
T1212
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM DataStage on Cloud Pak for Dataversion=5.4.0.0

Published CVSS scores

7.7IBMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1212Exploitation for Credential Access

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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