{"cve":"CVE-2022-21697","nvd":{"published":"2022-01-25T14:15:08.907","modified":"2026-06-17T04:26:47.070","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","score":7.1},"cwes":["CWE-918"],"references":["https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99eb","https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch","https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-gcv9-6737-pjqw","https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99eb","https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch"],"products":["jupyter:jupyter_server_proxy"],"source":"nvd","synced_at":"2026-10-19T21:27:20.926095847+00:00"},"epss":{"cve":"CVE-2022-21697","score":0.01096,"percentile":0.65575,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gcv9-6737-pjqw","url":"https://osv.dev/vulnerability/GHSA-gcv9-6737-pjqw","summary":"SSRF vulnerability in jupyter-server-proxy","modified":"2024-09-24T18:48:55.880796Z","packages":[{"ecosystem":"PyPI","name":"jupyter-server-proxy","purl":"pkg:pypi/jupyter-server-proxy","ranges":["<3.2.1"],"fixed":["3.2.1"]}]},{"id":"PYSEC-2022-16","url":"https://osv.dev/vulnerability/PYSEC-2022-16","summary":"","modified":"2023-11-08T04:08:08.495970Z","packages":[{"ecosystem":"PyPI","name":"jupyter-server-proxy","purl":"pkg:pypi/jupyter-server-proxy","ranges":["<3.2.1"],"fixed":["3.2.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}