Deserialization in IBM Websphere Application Server
CVE-2026-105442
IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 Liberty could allow a remote attacker to cause a denial of service caused by an insecure deserialization in the messaging service.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
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 — versions 8.5, 9.0
- IBM Websphere Application Server - Liberty
Weakness classification (CWE)
References
- www.ibm.com/support/pages/node/7292221 (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-105442?
- CVE-2026-105442 is a high-severity vulnerability in IBM Websphere Application Server, classified under Deserialization of Untrusted Data. CVSS score: 7.5/10. Published 2026-10-13.
- How severe is CVE-2026-105442?
- High severity. CVSS v3 base score is 7.5 out of 10.