CVE-2018-3761

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    CVE-2018-3761

    Published: 5 Jul 2018Last Modified: 7 Aug 2026

    Summary:

    Details: Nextcloud Server before 12.0.8 and 13.0.3 suffer from improper authentication on the OAuth2 token endpoint. Missing checks potentially allowed handing out new tokens in case the OAuth2 client was partly compromised.

    References: https://hackerone.com/reports/343111, https://nextcloud.com/security/advisory/?id=nc-sa-2018-003

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -42d3169e276bda2e2c41849fcc8a6f683719b323

    Affected versions

    v13.0.3RC2
    v13.0.3RC1
    v13.0.2
    v13.0.2RC1
    v13.0.1
    v13.0.1RC1
    v13.0.0

    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