Improper Validation Vulnerability in IBM i by IBM
CVE-2026-18251

4.3MEDIUM

Key Information:

Vendor

IBM
Status
I
Vendor
CVE Published:
14 September 2026

What is CVE-2026-18251?

A vulnerability in the IBM i platform allows remote attackers to exploit improper validation of WebSocket origins, potentially enabling them to access sensitive information. This issue affects multiple versions of IBM i, underscoring the importance of maintaining up-to-date security measures. Users are advised to consult IBM's security advisory for the recommended patches and additional mitigation steps.

Affected Version(s)

i 7.6

i 7.5

i 7.4

References

https://www.ibm.com/support/pages/node/7286974
vendor-advisorypatch

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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