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    CVE-2026-9090

    Casdoor versions 2.362.0 and earlier contain a vulnerability that allows an attacker to bypass authentication by supplying an arbitrary signing certificate. The buildSpCertificateStore function extracts the X.509 certificate directly from the incoming SAMLResponse instead of using the trusted pre-configured Identity Provider certificate, allowing an attacker to forge assertions signed with an attacker-controlled key.

    Published:May 28, 2026
    Last Modified:May 29, 2026
    EPS:May 28, 2026
    EPSS Score:0.00009
    CVSS Score:9.1

    Affected Products

    Vendor
    Casdoor
    Product
    Casdoor

    Exploits

    https://github.com/George0Papasotiriou/CVE-2026-9090-Modbus-TCP-Write-to-Read-Only-Coils-via-Function-Code-Spoofinghttps://github.com/Kimdir01/CVE-2026-9090-poc

    Common Weakness Enumeration

    CWE-285 Improper Authorization

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    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