CVE-2026-103499 IBM WebSphere Application Server Liberty - Denial of Service

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 contain a denial of service caused by uncontrolled resource consumption, letting remote unauthenticated attackers cause service disruption, exploit requires no special privileges.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.40% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-400

Vendor fix

Update to the latest available version beyond 26.0.0.10 or apply vendor patches.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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