All vulnerabilities
CVE-2026-103499

IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a denial of service

IBM WebSphere Application Server - LibertyWeb 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 33% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published13 Oct 2026Updated 13 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 - Liberty 17.0.0.3 through 26.0.0.10 and IBM WebSphere Application Server 8.5, and 9.0 Liberty could allow a remote unauthenticated attacker to cause a denial of service due to uncontrolled resource consumption.

Text from CVE List

Affected versions 3

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

References 1