Code Injection in IBM WebSphere Application Server - CVE-2026-9311
Published: June 3, 2026
Vulnerability identifier: #VU133294
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Amber
CVE-ID: CVE-2026-9311
CWE-ID: CWE-94
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 execute arbitrary code on the target system.
The vulnerability exists due to bypass of security controls. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2026-9311
Install updates from vendor's website.