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CVE-2026-33175

Estado: AnalizadaAlta (8.8)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Explotación remota de servicio (JupyterHub) con PR:L sin interacción del usuario. Impactos: obtención de acceso válido a cuenta (T1078) mediante bypass de autenticación OAuth2, y potencial modificación de cuenta (T1098) por control de username.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementUser Account ManagementNetwork SegmentationMulti-factor AuthenticationDisable or Remove Feature or ProgramApplication Developer Guidance

Tecnologías afectadas (1)

Jupyter — Oauthenticator

CWE

Referencias

JSON original (NVD)

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          "options": [
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            },
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          "timestamp": "2026-04-07T15:48:30.664149Z"
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  ],
  "lastModified": "2026-07-24T22:10:00.140",
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