CVE-2026-8620— IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities when using when using Web Server Plug-ins
Possible ATT&CK Techniques 2AI
T1071 · Application Layer Protocol T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| IBM | Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty | 8.5, 9.0≤ Interim Fix 002 | affected |
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I. Basic Information for CVE-2026-8620
Vulnerability Information
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Vulnerability Title
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities when using when using Web Server Plug-ins
Source: NVD (National Vulnerability Database)
Vulnerability Description
IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to HTTP request smuggling in the Web Server Plug-ins through a specially crafted request.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/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 Web Server Plug-ins for IBM WebSphere Application Server and IBM WebSphere Liberty 环境问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM Web Server Plug-ins for IBM WebSphere Application Server and IBM WebSphere Liberty是美国国际商业机器（IBM）公司的一个Web服务器集成插件组件。 IBM Web Server Plug-ins for IBM WebSphere Application Server and IBM WebSphere Liberty 8.5版本和9.0版本存在环境问题漏洞，该漏洞源于容易受到HTTP请求夹带攻击。
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 | Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty | 8.5, 9.0 ~ Interim Fix 002 | cpe:2.3:a:ibm:web_server_plug_ins_for_websphere_application_server_and_websphere_liberty:8.5:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-8620
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-8620 (1)
Same Patch Batch · IBM · 2026-05-26 · 20 CVEs total
| CVE-2026-3660 | 9.8 CRITICAL | IBM Engineering Lifecycle Management - Jazz Foundation is vulnerable to Authentication Byp |
| CVE-2026-8633 | 9.8 CRITICAL | IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by |
| CVE-2026-8855 | 8.1 HIGH | IBM HTTP Server is affected by multiple vulnerabilities |
| CVE-2026-8834 | 8.0 HIGH | IBM HTTP Server is affected by multiple vulnerabilities |
| CVE-2026-8856 | 7.7 HIGH | IBM HTTP Server is affected by multiple vulnerabilities |
| CVE-2026-8850 | 7.5 HIGH | IBM HTTP Server is affected by multiple vulnerabilities |
| CVE-2026-8854 | 7.5 HIGH | IBM HTTP Server is affected by multiple vulnerabilities |
| CVE-2026-8835 | 7.3 HIGH | IBM HTTP Server is affected by multiple vulnerabilities |
| CVE-2026-4051 | 7.2 HIGH | IBM Engineering Lifecycle Management - Jazz Foundation is vulnerable to Server Post-Auth R |
| CVE-2026-3603 | 7.1 HIGH | IBM Engineering Lifecycle Management - Jazz Foundation is vulnerable to XML external entit |
| CVE-2025-36126 | 6.4 MEDIUM | IBM Cognos Analytics is affected by Cross-site scripting. |
| CVE-2026-8852 | 6.2 MEDIUM | IBM HTTP Server is affected by multiple vulnerabilities |
| CVE-2025-13755 | 5.5 MEDIUM | IBM® Db2® is vulnerable to credential exposure in db2diag when executing specific testcase |
| CVE-2025-36148 | 5.4 MEDIUM | IBM Financial Transaction Manager for SWIFT Services for Multiplatforms is vulnerable to c |
| CVE-2025-36145 | 5.4 MEDIUM | Multiple Vulnerabilities in watsonx.data |
| CVE-2025-14290 | 5.4 MEDIUM | IBM webMethods Integration Sever is vulnerable to server-side request forgery |
| CVE-2025-36221 | 5.3 MEDIUM | Vulnerabilities exists in IBM Cloud Pak for Data System (CPDS 1.0) - Cyclops. |
| CVE-2025-36220 | 4.3 MEDIUM | Vulnerabilities exists in IBM Cloud Pak for Data System (CPDS 1.0) - Cyclops. |
| CVE-2026-9170 | IBM HTTP Server is affected by multiple vulnerabilities |
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V. Comments for CVE-2026-8620
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