CVE-2021-42136

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    CVE-2021-42136

    Published: 13 Apr 2022Last Modified: 10 Mar 2026

    Summary:

    Details: A stored Cross-Site Scripting (XSS) vulnerability in the Missing Data Codes functionality of REDCap before 11.4.0 allows remote attackers to execute JavaScript code in the client's browser by storing said code as a Missing Data Code value. This can then be leveraged to execute a Cross-Site Request Forgery attack to escalate privileges to administrator.

    References: https://www.project-redcap.org/, , https://redcap.med.usc.edu/_shib/assets/ChangeLog_Standard.pdf, http://packetstormsecurity.com/files/166723/REDCap-Cross-Site-Scripting.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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-2021-42136 | CVE-DB