CVE-2019-18835

    Dashboard / Vulnerabilities / CVE-2019-18835

    CVE-2019-18835

    Published: 8 Nov 2019Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

    References: https://github.com/matrix-org/synapse/releases/tag/v1.5.0, https://github.com/matrix-org/synapse/pull/6262

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -9ffcf0f7ba72f16e366f04db6384a9233b1808cb

    Affected versions

    v1.5.0rc2
    v1.5.0rc1

    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
    CVE-2019-18835 | CVE-DB