CVE-2021-22904

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    CVE-2021-22904

    Published: 11 Jun 2021Last Modified: 9 Sept 2026

    Summary:

    Details: The actionpack ruby gem before 6.1.3.2, 6.0.3.7, 5.2.4.6, 5.2.6 suffers from a possible denial of service vulnerability in the Token Authentication logic in Action Controller due to a too permissive regular expression. Impacted code uses `authenticate_or_request_with_http_token` or `authenticate_with_http_token` for request authentication.

    References: https://security.netapp.com/advisory/ntap-20210805-0009/, https://hackerone.com/reports/1101125, https://discuss.rubyonrails.org/t/cve-2021-22904-possible-dos-vulnerability-in-action-controller-token-authentication/77869

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -26126839058bad41120b5d74f3cc06b93baa987e

    Affected versions

    v5.2.4.5
    v5.2.5
    v5.2.4.4
    v5.2.4.3
    v5.2.4.2
    v5.2.4.1
    v5.2.4
    v5.2.4.rc1
    v5.2.1.rc1
    v5.2.0.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
    CVE-2021-22904 | CVE-DB