CVE-2020-36155

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    CVE-2020-36155

    Published: 4 Jan 2021Last Modified: 7 Aug 2026

    Summary:

    Details: An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Unauthenticated Privilege Escalation via User Meta. An attacker could supply an array parameter for sensitive metadata, such as the wp_capabilities user meta that defines a user's role. During the registration process, submitted registration details were passed to the update_profile function, and any metadata was accepted, e.g., wp_capabilities[administrator] for Administrator access.

    References: https://wordpress.org/plugins/ultimate-member/#developers, https://wpscan.com/vulnerability/cf13b0f8-5815-4d27-a276-5eff8985fc0b, https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -427bb6da1c2f984b0a0be7013e490496023bdcb6

    Affected versions

    2.1.11
    2.1.10
    2.1.9
    2.1.8
    2.1.7
    2.1.6
    2.1.5
    2.1.4
    2.1.3
    2.1.3-rc.1
    2.1.2
    2.1.2-rc.1
    2.1.1
    2.1.0
    2.1.0-rc.2
    2.1.0-rc.1

    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-2020-36155 | CVE-DB