CVE-2022-21697

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    CVE-2022-21697

    Published: 25 Jan 2022Last Modified: 12 Aug 2026

    Summary: SSRF vulnerability (requires authentication)

    Details: Jupyter Server Proxy is a Jupyter notebook server extension to proxy web services. Versions of Jupyter Server Proxy prior to 3.2.1 are vulnerable to Server-Side Request Forgery (SSRF). Any user deploying Jupyter Server or Notebook with jupyter-proxy-server extension enabled is affected. A lack of input validation allows authenticated clients to proxy requests to other hosts, bypassing the `allowed_hosts` check. Because authentication is required, which already grants permissions to make the same requests via kernel or terminal execution, this is considered low to moderate severity. Users may upgrade to version 3.2.1 to receive a patch or, as a workaround, install the patch manually.

    References: https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch, https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21697.json, https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-gcv9-6737-pjqw, https://nvd.nist.gov/vuln/detail/CVE-2022-21697, https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99eb

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -2d7dd346bb595106b417476de870a348943f3c70

    Affected versions

    v3.2.0

    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-2022-21697 | CVE-DB