CVE-2022-21697

Name: CVE-2022-21697
Creator: NVD / NIST
Published: 2022-01-25T14:15:08.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 1.10%

Last modified Jun 17, 2026

CVE-2022-21697 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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). EPSS estimates a 1.10% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

EPSS Probability

1.10%

61.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Jupyter	Jupyter Server Proxy	< 3.2.1

References

https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99ebPatch, Third Party Advisory
https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patchPatch, Third Party Advisory
https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-gcv9-6737-pjqwThird Party Advisory
https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99ebPatch, Third Party Advisory
https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patchPatch, Third Party Advisory
https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-gcv9-6737-pjqwThird Party Advisory

Timeline

Published: Jan 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-21697?

How severe is CVE-2022-21697?

CVE-2022-21697 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 1.10% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21697?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-21697?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST