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IBM disclosed multiple high-severity vulnerabilities affecting WebSphere and webMethods Integration Server, exposing enterprise middleware environments to remote compromise. In WebSphere, the reported issues include remote code execution flaws tracked as CVE-2026-9311, CVE-2026-9330, and CVE-2026-9319, alongside an authentication bypass and identity spoofing issue, CVE-2026-8644. Affected deployments include traditional WebSphere versions 9.0 and 8.5, with IBM issuing interim fixes through specific APARs and urging administrators to verify configurations and apply patches quickly.
A separate IBM advisory covers webMethods Integration Server CVE-2025-36072, a deserialization-based remote code execution flaw that can be exploited by an authenticated attacker with service execution privileges through internal APIs or protocols such as IDataBin. The vulnerability affects versions 10.11 through 10.11_Core_Fix22, 10.15 through 10.15_Core_Fix22, and 11.1 through 11.1_Core_Fix6 if they have not received the latest core fixes. Successful exploitation could allow arbitrary code execution in the Integration Server process, enabling lateral movement, persistence, and data exfiltration across business-critical systems.
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IBM disclosed multiple high-severity vulnerabilities affecting WebSphere, including remote code execution issues CVE-2026-9311, CVE-2026-9330, and CVE-2026-9319, plus authentication bypass and identity spoofing flaw CVE-2026-8644. The company issued interim fixes via APARs for affected traditional WebSphere versions 9.0 and 8.5.
ZeroPath reported on CVE-2025-36072, a remote code execution vulnerability in IBM webMethods Integration Server caused by unsafe deserialization and affecting multiple 10.11, 10.15, and 11.1 builds without the latest core fixes. The report said no public proof-of-concept details were available and that exploitation required authentication and service execution privileges.
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IBM disclosed two vulnerabilities in traditional **IBM WebSphere Application Server** affecting versions **9.0** and **8.5**, led by **CVE-2026-14512**, a **pre-authentication unsafe deserialization** flaw rated **CVSS 9.8**. The issue could allow a remote attacker to **bypass authentication** or achieve **arbitrary code execution** without user interaction, creating a high-risk path to full compromise of exposed WebSphere environments. IBM also identified **CVE-2026-14528**, a **CVSS 7.4** flaw that could expose sensitive information through insertion into log files. The company directed customers to apply the interim fix for **APAR PH72166** or upgrade to **Fix Pack 9.0.5.29+** for WebSphere 9.0 and **Fix Pack 8.5.5.31+** for WebSphere 8.5, and said **no workarounds or mitigations are available**.
Jul 29, 2026
IBM disclosed multiple vulnerabilities in **WebSphere Application Server** and **WebSphere Application Server Liberty**, including denial-of-service issues tracked as `CVE-2026-9071` and `CVE-2026-9320`, and an HTTP request smuggling flaw, `CVE-2026-8646`, rated up to **CVSS 8.1**. The affected products include WebSphere Application Server **8.5** and **9.0**, along with WebSphere Liberty versions **17.0.0.3 through 26.0.0.6** when certain servlet or websocket features are enabled. IBM said no workarounds or mitigations are available and advised customers to apply interim fixes for **APAR PH71631** and **PH71370** or upgrade to fix packs **26.0.0.7**, **9.0.5.29**, or **8.5.5.30**. A related high-severity issue, `CVE-2026-9072`, affects **IBM i 7.3 through 7.6** in environments using WebSphere Application Server or Liberty with **Intelligent Management** and the **WebSphere WebServer Plug-in**. IBM said an attacker who can impersonate backend servers and send crafted responses to the plug-in could trigger **remote code execution** and **denial of service**, also with a **CVSS 8.1** rating. Recommended actions include installing the latest WebSphere security updates, updating IBM i to current levels, and reviewing the secure configuration of Intelligent Management and the WebSphere WebServer Plug-in.
Jun 29, 2026
IBM disclosed a critical `CVE-2026-8633` vulnerability in WebSphere Application Server and WebSphere Liberty deployments that use the optional **Web Server Plug-ins** component, warning that unauthenticated attackers can send specially crafted HTTP requests to execute arbitrary commands on the host. The flaw, classified as improper control of code generation (`CWE-94`) and rated `CVSS 9.8`, affects WebSphere Application Server traditional and Liberty versions `8.5` and `9.0`, with successful exploitation potentially leading to full system compromise. IBM also patched `CVE-2026-8620`, an HTTP request smuggling issue that could let attackers bypass security controls and manipulate backend communications in affected environments. The company said both issues are addressed through **APAR `PH71342`** and related fix packs, and advised administrators to apply the fixes, validate updates in non-production environments, monitor HTTP traffic, restrict exposure of plug-in endpoints, use WAF protections, and perform threat hunting for signs of exploitation.
Jun 29, 2026