Vulnerability Details CVE-2026-3621
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.4 IBM WebSphere Application Server Liberty is vulnerable to identity spoofing under limited conditions when an application is deployed without authentication and authorization configured.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.2%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-3621
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cpe:2.3:a:ibm:websphere_application_server:17.0.0.3
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cpe:2.3:a:ibm:websphere_application_server:17.0.0.4
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cpe:2.3:a:ibm:websphere_application_server:18.0.0.1
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cpe:2.3:a:ibm:websphere_application_server:18.0.0.2
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cpe:2.3:a:ibm:websphere_application_server:18.0.0.3
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cpe:2.3:a:ibm:websphere_application_server:18.0.0.4
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.1
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.10
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.11
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.12
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.2
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.3
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.4
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.5
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.6
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.7
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.8
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cpe:2.3:a:ibm:websphere_application_server:19.0.0.9
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.1
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.10
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.11
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.12
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.2
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.3
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.4
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.5
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.6
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.7
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.8
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cpe:2.3:a:ibm:websphere_application_server:20.0.0.9
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cpe:2.3:a:ibm:websphere_application_server:21.0.0.1
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cpe:2.3:a:ibm:websphere_application_server:21.0.0.10
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cpe:2.3:a:ibm:websphere_application_server:21.0.0.12
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cpe:2.3:a:ibm:websphere_application_server:21.0.0.2
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cpe:2.3:a:ibm:websphere_application_server:21.0.0.3
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cpe:2.3:a:ibm:websphere_application_server:21.0.0.4
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cpe:2.3:a:ibm:websphere_application_server:21.0.0.5
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cpe:2.3:a:ibm:websphere_application_server:22.0.0.1
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cpe:2.3:a:ibm:websphere_application_server:22.0.0.5
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cpe:2.3:a:ibm:websphere_application_server:22.0.0.6
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cpe:2.3:a:ibm:websphere_application_server:23.0.0.3
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cpe:2.3:a:ibm:websphere_application_server:24.0.0.3
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cpe:2.3:a:ibm:websphere_application_server:24.0.0.4
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cpe:2.3:a:ibm:websphere_application_server:24.0.0.5
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cpe:2.3:a:ibm:websphere_application_server:24.0.0.6