What is CVE-2026-105443?

CVE-2026-105443 is a high-severity vulnerability in IBM Websphere Application Server - Liberty, classified under Improper Access Control. CVSS score: 8.2/10. Published 2026-10-13.

How severe is CVE-2026-105443?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in IBM Websphere Application Server - Liberty

CVE-2026-105443

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 has insufficient isolation between servers sharing an install.

Published 2026-10-13 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/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 Websphere Application Server - Liberty

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

www.ibm.com/support/pages/node/7292226 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-105443?: CVE-2026-105443 is a high-severity vulnerability in IBM Websphere Application Server - Liberty, classified under Improper Access Control. CVSS score: 8.2/10. Published 2026-10-13.
How severe is CVE-2026-105443?: High severity. CVSS v3 base score is 8.2 out of 10.