CVE-2021-21242

    Dashboard / Vulnerabilities / CVE-2021-21242

    CVE-2021-21242

    Published: 15 Jan 2021Last Modified: 7 Aug 2026

    Summary:

    Details: OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnerability which can lead to pre-auth remote code execution. AttachmentUploadServlet deserializes untrusted data from the `Attachment-Support` header. This Servlet does not enforce any authentication or authorization checks. This issue may lead to pre-auth remote code execution. This issue was fixed in 4.0.3 by removing AttachmentUploadServlet and not using deserialization

    References: https://github.com/theonedev/onedev/security/advisories/GHSA-5q3q-f373-2jv8, https://github.com/theonedev/onedev/commit/f864053176c08f59ef2d97fea192ceca46a4d9be

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -4bd71941974a1b077e955616d7ba3da6fd21670c

    Affected versions

    v4.0.2
    v4.0.1
    v4.0.0

    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-2021-21242 | CVE-DB