CVE-2021-22958

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    CVE-2021-22958

    Published: 7 Oct 2021Last Modified: 9 Jul 2026

    Summary:

    Details: A Server-Side Request Forgery vulnerability was found in concrete5 < 8.5.5 that allowed a decimal notation encoded IP address to bypass the limitations in place for localhost allowing interaction with local services. Impact can vary depending on services exposed.CVSSv2.0 AV:A/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N

    References: https://documentation.concretecms.org/developers/introduction/version-history/855-release-notes, https://hackerone.com/reports/863221

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -eb2e83dd9fc3f0eefa748ccc22bc4aed8ef85410

    Affected versions

    8.5.4
    8.5.3
    8.5.2
    8.5.1
    8.5.0

    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
    CVE-2021-22958 | CVE-DB