Improper Authentication in IBM API Connect Affects Security
CVE-2026-18838

9.4CRITICAL

Key Information:

Vendor

IBM
Status
Api Connect
Vendor
CVE Published:
7 November 2026

What is CVE-2026-18838?

IBM API Connect versions 12.1.0.0 through 12.1.1.2 exhibit a vulnerability that allows remote attackers to exploit insufficient verification of identity information in requests. This flaw could lead to unauthorized access, enabling an attacker to impersonate another user and potentially modify API configurations, thereby compromising sensitive data.

Affected Version(s)

API Connect 12.1.0.0 <= 12.1.1.2

References

https://www.ibm.com/support/pages/node/7295635
vendor-advisorypatch

CVSS V3.1

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.