What is CVE-2026-118904?

CVE-2026-118904 is a high-severity vulnerability in IBM Webmethods Integration Server, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-11-08.

How severe is CVE-2026-118904?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in IBM Webmethods Integration Server

CVE-2026-118904

IBM webMethods Integration Server 12.1 could allow a remote authenticated attacker to bypass security restrictions due to improper authentication.

Vulnerability class: Broken Authentication

Published 2026-11-08 · last modified 2026-11-08.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 Webmethods Integration Server — versions 12.1

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

www.ibm.com/support/pages/node/7295306 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-118904?: CVE-2026-118904 is a high-severity vulnerability in IBM Webmethods Integration Server, classified under Improper Authentication. CVSS score: 8.1/10. Published 2026-11-08.
How severe is CVE-2026-118904?: High severity. CVSS v3 base score is 8.1 out of 10.