CVE-2018-12423

    Dashboard / Vulnerabilities / CVE-2018-12423

    CVE-2018-12423

    Published: 14 Jun 2018Last Modified: 8 Jul 2026

    Summary:

    Details: In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.

    References: https://bugs.debian.org/901549, https://github.com/matrix-org/matrix-doc/issues/1304, https://matrix.org/blog/2018/06/14/security-update-synapse-0-31-2/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -667c6546bdbb50c1b5a88effe02ae12322d0d95b

    Affected versions

    v0.31.1
    v0.31.0
    v0.31.0-rc1

    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