CVE-2026-18838 — CRITICAL (9.4)

Vulnerability Description

IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to obtain sensitive information and modify API configurations due to improper authentication. Identity information supplied in requests is not sufficiently verified, which could allow a caller to impersonate another user.

CVSS Score

9.4

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

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-2026-18838?

CVE-2026-18838 is a vulnerability with a CVSS score of 9.4 (CRITICAL). IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to obtain sensitive information and modify API configurations due to improper authentication. Identity information supplied in r...

How severe is CVE-2026-18838?

CVE-2026-18838 has been rated CRITICAL with a CVSS base score of 9.4/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-18838?

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