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    CVE-2026-9330

    IBM WebSphere Application Server 9.0, and 8.5 is affected by an improper validation of user-supplied data during deserialization using the SAML Web Single Sign-On component. This could result in remote code execution via a crafted HTTP request when combined with a suitable gadget chain.

    Published:Jun 1, 2026
    Last Modified:Jun 4, 2026
    EPS:Jun 1, 2026
    EPSS Score:0.00355
    CVSS Score:8.5

    Affected Products

    Vendor
    Ibm
    Product
    Websphere Application Server

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

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    CVE-2026-9327 (CVSS 6.3) — IBM WebSphere Application Server 9.0, and 8.5 could allow an authenticated user with a low-privilege administr…
    CVE-2026-9336 (CVSS 6.5) — IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specia…
    CVE-2026-9338 (CVSS 5.3) — IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specia…
    CVE-2026-14525 (CVSS 9.4) — IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 IBM WebSphere Application Server Liberty …
    CVE-2026-10571 (CVSS 5.7) — IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service caused…
    CVE-2026-18499 (CVSS 8.1) — IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is vulnerable to a privilege escalation w…
    CVE-2026-8400 (CVSS 8.1) — IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty Continuous delive…
    CVE-2026-11536 (CVSS 8.5) — IBM WebSphere Application Server 9.0, and 8.5 is affected by a remote code execution vulnerability in the SOAP…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High