CVE-2026-19121 — HIGH (8.3)

Vulnerability Description

IBM API Connect 12.1.0.0 through 12.1.1.2 could allow an authenticated attacker to gain unauthorized access due to improper authorization. Tenant context is not sufficiently verified against the authenticated user, which could allow access to another tenant's resources.

CVSS Score

8.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

LOW

Related Weaknesses (CWE)

CWE-290

References

https://www.ibm.com/support/pages/node/7295635

FAQ

What is CVE-2026-19121?

CVE-2026-19121 is a vulnerability with a CVSS score of 8.3 (HIGH). IBM API Connect 12.1.0.0 through 12.1.1.2 could allow an authenticated attacker to gain unauthorized access due to improper authorization. Tenant context is not sufficiently verified against the authe...

How severe is CVE-2026-19121?

CVE-2026-19121 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-19121?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.