CVE-2022-21659

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    CVE-2022-21659

    Published: 31 Jan 2022Last Modified: 12 Aug 2026

    Summary: Observable Response Discrepancy in Flask-AppBuilder

    Details: Flask-AppBuilder is an application development framework, built on top of the Flask web framework. In affected versions there exists a user enumeration vulnerability. This vulnerability allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Users are advised to upgrade to version 3.4.4 as soon as possible. There are no known workarounds for this issue.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21659.json, https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-wfjw-w6pv-8p7f, https://nvd.nist.gov/vuln/detail/CVE-2022-21659, https://github.com/dpgaspar/Flask-AppBuilder/pull/1775

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -fc93179095208c26d545911a52641cfefc2ff126

    Affected versions

    v3.4.1
    v3.4.0

    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-2022-21659 | CVE-DB