CVE-2026-9330 HIGH

CVE-2026-9330: IBM WebSphere Application Server is affected by remote code execution

Vendor Ibm
Product WebSphere Application Server
Weakness CWE-502 · Unsafe deserialization
Published June 1, 2026
Last update June 2, 2026
View on NVD All CVEs

CVSS base score

8.5/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

IBM WebSphere Application Server 9.0, and 8.5 is affected by an improper validation of user-supplied data during deserialization using the SAML Web Single Sign-On component. This could result in remote code execution via a crafted HTTP request when combined with a suitable gadget chain.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 2, 2026 Record updated

Related vulnerabilities

04Related CVE

CVE-2025-54920 Apache Spark: Spark History Server Code Execution Vulnerability CVE-2026-39472 WordPress WooCommerce PDF Invoices & Packing Slips plugin < 5.9.0 - PHP Object Injection vulnerability CVE-2023-0669 Fortra GoAnywhere MFT License Response Servlet Command Injection CVE-2025-34489 GFI MailEssentials < 21.8 Local Privilege Escalation CVE-2026-22345 WordPress Image Gallery – Lightbox Gallery, Responsive Photo Gallery, Masonry Gallery plugin <= 1.6.0 - PHP Object Injection vulnerability