CVE-2026-78636

IBM WebSphere Application Server Liberty prior to 26.0.0.11 is affected by multiple vulnerabilities

Published Nov 8, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10 is affected by an information disclosure vulnerability due to unsafe class reflection in the JMX REST connector body parser.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerabilities now by applying the fix pack(s) listed below. For IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.10: · Apply Liberty Fix Pack 26.0.0.11 https://www.ibm.com/support/pages/node/7294658 (availability November 2026) or later fix pack.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10 is affected by an information disclosure vulnerability due to unsafe class reflection in the JMX REST connector body parser.
Title IBM WebSphere Application Server Liberty prior to 26.0.0.11 is affected by multiple vulnerabilities
First Time appeared Ibm
Ibm websphere Application Server Liberty
Weaknesses CWE-470
CPEs cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm websphere Application Server Liberty
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Nov 9, 2026, 5:02 PM
Reserved
Aug 24, 2026, 10:33 PM
Status
Awaiting Analysis
Published
Nov 8, 2026, 7:17 PM
Modified
Nov 9, 2026, 5:17 PM