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CVE-2026-8646— IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities

CVSS 7.4 · High EPSS 0.36% · P30

Affected Version Matrix 3

VendorProductVersion RangeStatus
IBMWebSphere Application Server9.0.0≤ 7.0.2 Interim Fix 035affected
8.5.0≤ 7.0.3 Interim Fix 017affected
IBMWebSphere Application Server - Liberty17.0.0.3≤ 26.0.0.6affected
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I. Basic Information for CVE-2026-8646

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 HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
IBM WebSphere Application Server 输入验证错误漏洞
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存在输入验证错误漏洞，该漏洞源于HTTP请求夹带技术，可能导致远程攻击者发送特制请求绕过安全控制、伪造身份、提升权限和泄露敏感信息。
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

VendorProductAffected VersionsCPESubscribe
IBMWebSphere Application Server 9.0.0 ~ 7.0.2 Interim Fix 035 cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*
IBMWebSphere 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-2026-8646

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III. Intelligence Information for CVE-2026-8646

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Other References for CVE-2026-8646 (1)

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

CVE-2026-1056110.0 CRITICALUnauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Inj
CVE-2026-76649.8 CRITICALUnauthenticated Flow Execution via Webhook Endpoint in Langflow OSS
CVE-2026-126289.1 CRITICALHardcoded credential in the IBM Storage Protect Snapshot For Windows leads to unauthorized
CVE-2026-90728.1 HIGHWebSphere Application Server Remote Code Execution
CVE-2026-90717.5 HIGHIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by
CVE-2026-88587.5 HIGHWebSphere Application Server Remote Code Execution
CVE-2026-90067.4 HIGHIBM WebSphere Application Server is affected by server-side request forgery
CVE-2024-541786.5 MEDIUMMultiple vulnerabilities affect IBM Db2® on Cloud Pak for Data, and Db2 Warehouse on Cloud
CVE-2024-514546.5 MEDIUMIBM Engineering Lifecycle Management - Engineering Workflow Management is impacted by vuln
CVE-2026-80596.1 MEDIUMMultiple Vulnerabilities in IBM Datacap
CVE-2026-72536.0 MEDIUMIBM Sterling File Gateway SQL Injection
CVE-2025-26696.0 MEDIUMMultiple vulnerabilities affect IBM Db2® on Cloud Pak for Data, and Db2 Warehouse on Cloud
CVE-2026-93205.9 MEDIUMIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by
CVE-2026-108525.9 MEDIUMWebsphere Application Server is Affected By a Denial of Service
CVE-2026-86365.5 MEDIUMMultiple Vulnerabilities in IBM Datacap
CVE-2026-113725.4 MEDIUMIBM TRIRIGA Cross-Site Scripting Vulnerability
CVE-2025-331285.4 MEDIUMIBM Engineering Lifecycle Management - Engineering Workflow Management is impacted by vuln
CVE-2023-338545.3 MEDIUMMultiple vulnerabilities affect IBM Db2® on Cloud Pak for Data, and Db2 Warehouse on Cloud
CVE-2026-96102.3 LOWMultiple Vulnerabilities in IBM Datacap
CVE-2026-10845IBM WebSphere Application Server is affected by an authentication bypass vulnerability

IV. Related Vulnerabilities

Same product: WebSphere Application Server
Same vendor: IBM
Same weakness: CWE-444

V. Comments for CVE-2026-8646

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