CVE-2026-8633 CRITICAL

CVE-2026-8633: IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities when using when using Web Server Plug-ins

Vendor Ibm
Product Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty
Weakness CWE-94 · Code injection
Published May 26, 2026
Last update May 27, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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 remote code execution in the Web Server Plug-ins, through a specially crafted request.

Key dates

02Disclosure timeline

May 26, 2026 CVE published
May 27, 2026 Record updated