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| purl | pkg:pypi/oauthenticator@16.3.1 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-ut2a-drg6-jqeq
Aliases: CVE-2026-33175 GHSA-rrvg-cxh4-qhrv |
Auth0OAuthenticator has an Authentication Bypass via Unverified Email Claims ### Summary 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. ### Impact This is an **Authentication Bypass Vulnerability**. Any Auth0 tenant leveraging the `Auth0OAuthenticator` mapping the `email` claim to the JupyterHub username is impacted. By default, Auth0 handles email verification as a user flag, not a hard block to authentication streams. If an attacker can register an account with the Auth0 tenant with an unverified email and knows the email of an existing user on the system, they can authenticate as that user. ### Patches - Upgrade oauthenticator to 17.4 ### Workarounds - Check `email_verified` field in an `Authenticator.post_auth_hook` function - Do not use `email` as the username claim - [Enforce email verification in auth0](https://support.auth0.com/center/s/article/Enforce-Email-Verification-With-Sending-Email-After-Each-Denied-Access) |
Affected by 0 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-sfqk-pqmp-nkfj | Globus `identity_provider` restriction ignored when used with `allow_all` in JupyterHub 5.0 JupyterHub < 5.0, when used with `GlobusOAuthenticator`, could be configured to allow all users from a particular institution only. The configuration for this would look like: ```python |
CVE-2024-37300
GHSA-gprj-3p75-f996 |
| Date | Actor | Action | Vulnerability | Source | VulnerableCode Version |
|---|---|---|---|---|---|
| 2026-06-06T07:46:00.856948+00:00 | GitLab Importer | Affected by | VCID-ut2a-drg6-jqeq | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/pypi/oauthenticator/CVE-2026-33175.yml | 38.6.0 |
| 2026-06-05T21:45:15.085442+00:00 | GHSA Importer | Fixing | VCID-sfqk-pqmp-nkfj | https://github.com/advisories/GHSA-gprj-3p75-f996 | 38.6.0 |
| 2026-06-04T16:50:40.374177+00:00 | GithubOSV Importer | Fixing | VCID-sfqk-pqmp-nkfj | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/06/GHSA-gprj-3p75-f996/GHSA-gprj-3p75-f996.json | 38.6.0 |
| 2026-06-04T16:21:56.891579+00:00 | GitLab Importer | Fixing | VCID-sfqk-pqmp-nkfj | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/pypi/oauthenticator/CVE-2024-37300.yml | 38.6.0 |