Authentication Bypass by Spoofing in IBM WebSphere Application Server - CVE-2026-8644
Published: June 3, 2026
Vulnerability identifier: #VU133295
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-8644
CWE-ID: CWE-290
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: IBM Corporation
Affected software:
IBM WebSphere Application Server
IBM WebSphere Application Server
Detailed vulnerability description
The vulnerability allows a remote attacker to perform an authentication bypass by spoofing.
The vulnerability exists due to excessive data output by the application. A remote attacker can perform an authentication bypass by spoofing.
How to mitigate CVE-2026-8644
Install updates from vendor's website.