8.8
High
CVE-2026-33175 OAuthenticator is software that allows OAuth2 identity providers to be plugged in and used with JupyterHub
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| oauthenticator 17.4 | earliest → < 17.4.0 | 17.4.0 |
Other CVEs of oauthenticator
The 5 CVEs of oauthenticator →
CVE-2024-37300
OAuthenticator is software that allows OAuth2 identity providers to be plugged in and used with JupyterHub
8.1
High
CVE-2024-29033
OAuthenticator provides plugins for JupyterHub to use common OAuth providers, as well as base classes for writing…
7.5
High
CVE-2022-31027
OAuthenticator is an OAuth token library for the JupyerHub login handler
4.2
Medium
CVE-2020-26250
OAuthenticator is an OAuth login mechanism for JupyterHub
6.3
Medium