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CVE-2026-9320— IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities

Quick assessment

Affected
IBM WebSphere Application Server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM websphere application server是美国IBM公司的一个Web应用执行环境。 IBM WebSphere Application Server存在资源管理错误漏洞，该漏洞源于发送特制请求，可能导致远程攻击者造成服务器消耗内存资源。

CVSS 5.9 · Medium EPSS 0.56% · P45

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 3

VendorProduct Version RangeStatus
IBM WebSphere Application Server 9.0.0≤ 7.0.2 Interim Fix 035 affected
8.5.0≤ 7.0.3 Interim Fix 017 affected
IBM WebSphere Application Server - Liberty 17.0.0.3≤ 26.0.0.6 affected
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I. Basic Information for CVE-2026-9320

Vulnerability Information
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Vulnerability Title
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
IBM Websphere Application Server 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM websphere application server是美国IBM公司的一个Web应用执行环境。 IBM WebSphere Application Server存在资源管理错误漏洞，该漏洞源于发送特制请求，可能导致远程攻击者造成服务器消耗内存资源。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM WebSphere Application Server 9.0.0 ~ 7.0.2 Interim Fix 035 cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*
IBM WebSphere Application Server - Liberty 17.0.0.3 ~ 26.0.0.6 cpe:2.3:a:ibm:websphere_application_server___liberty:17.0.0.3:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-9320

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III. Intelligence Information for CVE-2026-9320

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Other References for CVE-2026-9320 (1)

Same Patch Batch · IBM · 2026-06-22 · 21 CVEs total

CVE-2026-10561 10.0 CRITICAL Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Inj
CVE-2026-7664 9.8 CRITICAL Unauthenticated Flow Execution via Webhook Endpoint in Langflow OSS
CVE-2026-12628 9.1 CRITICAL Hardcoded credential in the IBM Storage Protect Snapshot For Windows leads to unauthorized
CVE-2026-9072 8.1 HIGH WebSphere Application Server Remote Code Execution
CVE-2026-9071 7.5 HIGH IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by
CVE-2026-8858 7.5 HIGH WebSphere Application Server Remote Code Execution
CVE-2026-9006 7.4 HIGH IBM WebSphere Application Server is affected by server-side request forgery
CVE-2026-8646 7.4 HIGH IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by
CVE-2024-54178 6.5 MEDIUM Multiple vulnerabilities affect IBM Db2® on Cloud Pak for Data, and Db2 Warehouse on Cloud
CVE-2024-51454 6.5 MEDIUM IBM Engineering Lifecycle Management - Engineering Workflow Management is impacted by vuln
CVE-2026-8059 6.1 MEDIUM Multiple Vulnerabilities in IBM Datacap
CVE-2026-7253 6.0 MEDIUM IBM Sterling File Gateway SQL Injection
CVE-2025-2669 6.0 MEDIUM Multiple vulnerabilities affect IBM Db2® on Cloud Pak for Data, and Db2 Warehouse on Cloud
CVE-2026-10852 5.9 MEDIUM Websphere Application Server is Affected By a Denial of Service
CVE-2026-8636 5.5 MEDIUM Multiple Vulnerabilities in IBM Datacap
CVE-2026-11372 5.4 MEDIUM IBM TRIRIGA Cross-Site Scripting Vulnerability
CVE-2025-33128 5.4 MEDIUM IBM Engineering Lifecycle Management - Engineering Workflow Management is impacted by vuln
CVE-2023-33854 5.3 MEDIUM Multiple vulnerabilities affect IBM Db2® on Cloud Pak for Data, and Db2 Warehouse on Cloud
CVE-2026-9610 2.3 LOW Multiple Vulnerabilities in IBM Datacap
CVE-2026-10845 IBM WebSphere Application Server is affected by an authentication bypass vulnerability

IV. Related Vulnerabilities

Same product: WebSphere Application Server
Same vendor: IBM
Same weakness: CWE-400

V. Comments for CVE-2026-9320

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