IBM WebSphere Server Vulnerable to Remote Code Execution Attack Via Crafted Request

Cybersecuritynews •Abinaya • June 1, 2026

IBM has disclosed a critical security vulnerability in its WebSphere Application Server ecosystem that could allow attackers to execute arbitrary code through specially crafted HTTP requests. The flaw, tracked as CVE-2026-8633, affects environments that use the optional Web Server Plug-ins component, significantly elevating the risk for enterprise deployments that rely on WebSphere infrastructure. The vulnerability […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Vulnerabilities in IBM WebSphere Allow Remote Code Execution IBM has disclosed multiple critical vulnerabilities in its WebSphere Application Server, including CVE-2026-8633, which allows remote code execution via crafted HTTP requests. Other vulnerabilities, such as CVE-2026-9311, CVE-2026-9319, and CVE-2026-8644, enable attackers to bypass security controls and execute malicious code. The flaws primarily affect enterprise environments using WebSphere, raising significant risks for organizations reliant on these systems. Administrators are urged to apply security patches promptly, as there is no indication of active exploitation yet. IBM has also addressed vulnerabilities in its Business Automation Workflow, with CVE-2026-33186 allowing authentication bypass. The security updates are available in specific versions of the affected software. The situation remains critical as organizations work to secure their systems. 3 sources 73

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IBM WebSphere Server Vulnerable to Remote Code Execution Attack Via Crafted Request

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