CVE-2026-9330
IBM WebSphere Application Server is affected by remote code execution
CVSS Score
8.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-502 |
| Vendor | ibm |
| Product | websphere application server |
| Published | Jun 1, 2026 |
| Last Updated | Jun 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
IBM / WebSphere Application Server
9.0 ≤ 1.1.9.12 8.5