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IBM WebSphere Application Server LibertyIBM WebSphere Application Server Liberty is affected by identity spoofing

Risk 70
Severity
7.5
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

1 / 2
Source: MITRE
First published (updated )
CVE-2026-3621

IBM Web Server Plug-insIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities when using when using Web Server Plug-ins

Risk 37
Severity
7.5
EPSS
0.28%
AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N

IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to HTTP request smuggling in the Web Server Plug-ins through a specially crafted request.

1 / 2
Source: MITRE
First published (updated )
CVE-2026-8620

IBM iWebSphere Application Server Remote Code Execution

Risk 56
Severity
8.8
EPSS
0.41%
Code Injection
AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.

First published (updated )
CVE-2026-8858

IBM iWebsphere Application Server is Affected By a Denial of Service

Risk 43
Severity
7.5
Null Pointer Dereference
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

IBM i 7.6, 7.5, 7.4, and 7.3, IBM WebSphere Application Server, and IBM WebSphere Application Server Liberty are vulnerable to denial of service in the WebSphere WebServer Plug-in component when an attacker can pass crafted requests to the web server.

1 / 2
Source: MITRE
First published (updated )
CVE-2026-10852

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