cvedb.io
CVE-2026-33175
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2026-04-03T22:16:26.483 · Last modified 2026-06-17T10:37:04.913

Summary

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

jupyter — oauthenticator

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.