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    CVE-2019-18835

    Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from the expected servers.

    Published:Nov 7, 2019
    Last Modified:Nov 21, 2024
    EPS:Nov 7, 2019
    EPSS Score:0.00163
    CVSS Score:9.8

    Affected Products

    Vendor
    Matrix
    Product
    Synapse

    Exploits

    No exploit reference

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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