High severity8.8NVD Advisory· Published Apr 3, 2026· Updated Apr 15, 2026
CVE-2026-33175
CVE-2026-33175
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
oauthenticatorPyPI | < 17.4.0 | 17.4.0 |
Affected products
10- osv-coords9 versionspkg:apk/chainguard/py3.10-oauthenticatorpkg:apk/chainguard/py3.11-oauthenticatorpkg:apk/chainguard/py3.12-oauthenticatorpkg:apk/chainguard/py3.13-oauthenticatorpkg:apk/wolfi/py3.10-oauthenticatorpkg:apk/wolfi/py3.11-oauthenticatorpkg:apk/wolfi/py3.12-oauthenticatorpkg:apk/wolfi/py3.13-oauthenticatorpkg:pypi/oauthenticator
< 17.4.0-r0+ 8 more
- (no CPE)range: < 17.4.0-r0
- (no CPE)range: < 17.4.0-r0
- (no CPE)range: < 17.4.0-r0
- (no CPE)range: < 17.4.0-r0
- (no CPE)range: < 17.4.0-r0
- (no CPE)range: < 17.4.0-r0
- (no CPE)range: < 17.4.0-r0
- (no CPE)range: < 17.4.0-r0
- (no CPE)range: < 17.4.0
Patches
Vulnerability mechanics
References
6- github.com/jupyterhub/oauthenticator/commit/f0c7002dc36e41efae0f674033cf7888a21d96f9nvdPatchWEB
- github.com/advisories/GHSA-rrvg-cxh4-qhrvghsaADVISORY
- github.com/jupyterhub/oauthenticator/security/advisories/GHSA-rrvg-cxh4-qhrvnvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-33175ghsaADVISORY
- github.com/jupyterhub/oauthenticator/releases/tag/17.4.0nvdProductWEB
- support.auth0.com/center/s/article/Enforce-Email-Verification-With-Sending-Email-After-Each-Denied-AccessghsaWEB
News mentions
0No linked articles in our index yet.