What is CVE-2026-108178?

CVE-2026-108178 is a medium-severity vulnerability in IBM API Connect, classified under CWE-358. CVSS score: 4.2/10. Published 2026-11-07.

How severe is CVE-2026-108178?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Vulnerability in IBM API Connect

CVE-2026-108178

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a token to be accepted that should be rejected due to an improperly implemented security check. Under certain conditions, token validation is incomplete, so a token may be accepted for a purpose it was not intended for.

Published 2026-11-07 · last modified 2026-11-07.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM API Connect

Weakness classification (CWE)

CWE-358

References

www.ibm.com/support/pages/node/7295635 (vendor-advisory, patch)
www.ibm.com/support/pages/node/7295637 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-108178?: CVE-2026-108178 is a medium-severity vulnerability in IBM API Connect, classified under CWE-358. CVSS score: 4.2/10. Published 2026-11-07.
How severe is CVE-2026-108178?: Medium severity. CVSS v3 base score is 4.2 out of 10.