CVE Feed

    Dashboard / CVE / CVE-2021-4226

    CVE-2021-4226

    RSFirewall tries to identify the original IP address by looking at different HTTP headers. A bypass is possible due to the way it is implemented.

    Published:Dec 15, 2022
    Last Modified:May 27, 2025
    EPS:Dec 15, 2022
    EPSS Score:0.00025
    CVSS Score:9.8

    Affected Products

    Vendor
    Rsjoomla
    Product
    Rsfirewall\!

    Exploits

    https://wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352https://wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352

    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