CVE-2024-29033Public exploitNetwork attack vector

Unauthorized hub access via email-domain validation

Published Mar 20, 2024 · Updated Aug 2, 2024

Improper authorization in OAuthenticator before 16.3.0 allows remote attackers to access JupyterHub via a crafted Google account. GoogleOAuthenticator.check_allowed trusted the domain suffix parsed from the email claim instead of requiring the Google hd organization claim. Exploitation requires a Google account using an address at the configured hosted domain and grants the JupyterHub access assigned to that identity.

CVSS severity7.5
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in OAuthenticator before 16.3.0 allows remote attackers to access JupyterHub via a crafted Google account. GoogleOAuthenticator.check_allowed trusted the domain suffix parsed from the email claim instead of requiring the Google hd organization claim. Exploitation requires a Google account using an address at the configured hosted domain and grants the JupyterHub access assigned to that identity.

The record

CVE
CVE-2024-29033
Published
Mar 20, 2024
Updated
Aug 2, 2024
Vendor
Project Jupyter
Product
OAuthenticator
Classifications
CWE-285, T1078.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 16.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Project Jupyter · OAuthenticatorversion=< 16.3.0

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
T1078.004Valid Accounts: Cloud Accounts

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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