CVE-2026-11541— IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by HTTP request smuggling
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| IBM | WebSphere Application Server | 9.0 | affected |
8.5 | affected | ||
| IBM | WebSphere Application Server - Liberty | 17.0.0.3≤ 26.0.0.6 | affected |
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I. Basic Information for CVE-2026-11541
Vulnerability Information
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Vulnerability Title
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by HTTP request smuggling
Source: NVD (National Vulnerability Database)
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 affected by an HTTP request smuggling vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: NVD (National Vulnerability Database)
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请求走私问题，可能导致攻击者未经身份验证通过网络访问造成数据泄露和篡改。
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 | 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-2026-11541
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Vendor Advisories for CVE-2026-11541 (1)
Same Patch Batch · IBM · 2026-06-30 · 43 CVEs total
| CVE-2026-10134 | 10.0 CRITICAL | Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows |
| CVE-2026-7873 | 9.9 CRITICAL | Code Injection Vulnerability in Code Validation Endpoint |
| CVE-2026-7803 | 9.8 CRITICAL | Flow Validation Bypass via Empty Component Type Field |
| CVE-2026-7871 | 9.8 CRITICAL | Insecure Deserialization in Redis Cache Backend |
| CVE-2026-10109 | 9.8 CRITICAL | IBM® Db2® is vulnerable to remote code execution due to improper pre-auth DRDA handshake h |
| CVE-2026-10140 | 9.6 CRITICAL | Cross-Tenant API Key Reuse and Billing Fraud in Langflow Voice Mode Subsystem |
| CVE-2026-11712 | 9.3 CRITICAL | IBM WebSphere Application Server is affected by a cross-site scripting vulnerability |
| CVE-2026-11708 | 9.3 CRITICAL | IBM WebSphere Application Server is affected by a cross-site scripting vulnerability |
| CVE-2026-7663 | 9.1 CRITICAL | Unauthenticated Cross-User MCP Resource Access and Tool Execution via Streamable Transport |
| CVE-2026-7874 | 9.1 CRITICAL | Weak Cryptographic Key Derivation Exposed All Stored Credentials |
| CVE-2026-11714 | 8.5 HIGH | IBM WebSphere Application Server Liberty is affected by an authorization bypass vulnerabil |
| CVE-2026-11594 | 8.5 HIGH | IBM WebSphere Application Server is affected by multiple cross-site scripting vulnerabilit |
| CVE-2026-10129 | 8.5 HIGH | SSRF via HTTP Redirect Following in Langflow API Request Component |
| CVE-2026-10564 | 8.2 HIGH | SSRF Vulnerability in Langflow OSS Legacy Components Bypasses Protection |
| CVE-2026-10560 | 8.2 HIGH | Unauthenticated Access to Private Flow Build Events and Cancellation in Langflow OSS |
| CVE-2025-36359 | 8.1 HIGH | IBM DevOps Loop is susceptible to an Insufficient Session Expiration vulnerability. |
| CVE-2026-13449 | 7.6 HIGH | XXE attack in IBM Business Automation Manager Open Editions |
| CVE-2026-13759 | 7.5 HIGH | IBM WebSphere eXtreme Scale is affected by Insecure Deserilization |
| CVE-2026-13772 | 7.5 HIGH | IBM WebSphere eXtreme Scale's OQL is affected by remote code execution |
| CVE-2026-11806 | 7.2 HIGH | IBM WebSphere Application Server Liberty is affected by a an arbitrary file read vulnerabi |
Showing top 20 of 43 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: WebSphere Application Server
- CVE-2026-11594
IBM WebSphere Application Server is affected by multiple cro - CVE-2026-11595
IBM WebSphere Application Server is affected by a Path Trave - CVE-2026-11708
IBM WebSphere Application Server is affected by a cross-site - CVE-2026-11712
IBM WebSphere Application Server is affected by a cross-site - CVE-2026-10852
Websphere Application Server is Affected By a Denial of Serv
Same vendor: IBM
Same weakness: CWE-444
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OpenVPN Access Server 2.7.2-3.1.0 HTTP走私漏洞 - CVE-2026-11806
IBM WebSphere Application Server Liberty is affected by a an - CVE-2026-13763
HTTP/2 Stream Parser Confusion Body-Inspection Bypass in AWS - CVE-2026-13762
HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Ama - CVE-2026-58055
nghttp2 nghttpx - HTTP Request/Response Smuggling via Upgrad
V. Comments for CVE-2026-11541
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