CVE-2021-21430

    Dashboard / Vulnerabilities / CVE-2021-21430

    CVE-2021-21430

    Published: 10 May 2021Last Modified: 9 Jul 2026

    Summary:

    Details: OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec. Using `File.createTempFile` in JDK will result in creating and using insecure temporary files that can leave application and system data vulnerable to attacks. Auto-generated code (Java, Scala) that deals with uploading or downloading binary data through API endpoints will create insecure temporary files during the process. Affected generators: `java` (jersey2, okhttp-gson (default library)), `scala-finch`. The issue has been patched with `Files.createTempFile` and released in the v5.1.0 stable version.

    References: https://github.com/OpenAPITools/openapi-generator/pull/8787, https://github.com/OpenAPITools/openapi-generator/pull/8791, https://github.com/OpenAPITools/openapi-generator/security/advisories/GHSA-cqxr-xf2w-943w

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -560bf7e080518f1c5e9af41acdbf3fa402d75512

    Affected versions

    v5.1.0

    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-2021-21430 | CVE-DB