All vulnerabilities
CVE-2026-105442

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a deserialization of untrusted data

IBM WebSphere Application ServerWeb servers
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.40%Chance of exploitation activity in the next 30 days, higher than 32% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published13 Oct 2026Updated 14 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

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.

Text from CVE List

Affected versions 3

  • WebSphere Application Serveraffected: 8.5CVE List
  • WebSphere Application Serveraffected: 9.0CVE List
  • WebSphere Application Server - Libertyaffected: 17.0.0.3 through 26.0.0.10CVE List

References 1