Description

OAuthenticator is software that allows OAuth2 identity providers to be plugged in and used with JupyterHub. Prior to version 17.4.0, an authentication bypass vulnerability in oauthenticator allows an attacker with an unverified email address on an Auth0 tenant to login to JupyterHub. When email is used as the usrname_claim, this gives users control over their username and the possibility of account takeover. This issue has been patched in version 17.4.0.

INFO

Published Date :

2026-04-03T21:56:26.830Z

Last Modified :

2026-04-07T16:01:12.600Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33175 vulnerability.

Vendors Products
Jupyterhub
  • Oauthenticator
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33175.

URL Resource
https://github.com/jupyterhub/oauthenticator/commit/f0c7002dc36e41efae0f674033cf7888a21d96f9 cve-icon cve-icon
https://github.com/jupyterhub/oauthenticator/releases/tag/17.4.0 cve-icon cve-icon
https://github.com/jupyterhub/oauthenticator/security/advisories/GHSA-rrvg-cxh4-qhrv cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact