Deserialization of Untrusted Data in IBM WebSphere Application Server - CVE-2026-11536

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Main Vulnerability Database Vulnerabilities #VU135125

Deserialization of Untrusted Data in IBM WebSphere Application Server - CVE-2026-11536

Published: June 24, 2026


Vulnerability identifier: #VU135125
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Clear
CVE-ID: CVE-2026-11536
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: IBM Corporation
Affected software:
IBM WebSphere Application Server

Detailed vulnerability description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data. A remote user can pass specially crafted data to the application 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-2026-11536

Install updates from vendor's website.

Sources