OAuthenticator is software that allows OAuth2 identity providers to be plugged in and used with JupyterHub. JupyterHub < 5.0, when used with GlobusOAuthenticator, could be configured to allow all users from a particular institution only. This worked fine prior to JupyterHub 5.0, because allow_all did not take precedence over identity_provider. Since JupyterHub 5.0, allow_all does take precedence over identity_provider. On a hub with the same config, now all users will be allowed to login, regardless of identity_provider. identity_provider will basically be ignored. This is a documented change in JupyterHub 5.0, but is likely to catch many users by surprise. OAuthenticator 16.3.1 fixes the issue with JupyterHub 5.0, and does not affect previous versions. As a workaround, do not upgrade to JupyterHub 5.0 when using GlobusOAuthenticator in the prior configuration.
CVE-2024-37300
This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 67% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.1
- EG Score
- 8.1(medium)
- EG Risk
- 37(Track)EG Risk 37/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity81% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 35%
- KEV
- Not listed
Published
June 12, 2024
Last Modified
April 15, 2026
Advisory Details (3)
Auto-updated Sep 16, 2026Upgrading to JupyterHub 5 — JupyterHub documentation
https://jupyterhub.readthedocs.io/en/stable/howto/upgrading-v5.html#authenticator-allow-all-and-allow-existing-usersGlobus `identity_provider` restriction ignored when used with `allow_all` in JupyterHub 5.0 · Advisory · jupyterhub/oauthenticator · GitHub
https://github.com/jupyterhub/oauthenticator/security/advisories/GHSA-gprj-3p75-f996commit d1aea05fa89f (jupyterhub/oauthenticator)
Fix landed in jupyterhub/oauthenticator commit d1aea05fa89f — awaiting tagged release
https://github.com/jupyterhub/oauthenticator/commit/d1aea05fa89f2beae15ab0fa0b0d071030f79654Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| oauthenticator | 0.1.0 ... 16.3.0 (44 versions) | 16.3.1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 31× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 182 total refreshes for this CVE.
- 2026-09-19 15:40 UTCEPSS rescore
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Related CVEs(same CWE)
Same CWE
10 shownCWE-863
Frequently asked(5)
What is CVE-2024-37300?
When was CVE-2024-37300 disclosed?
Is CVE-2024-37300 actively exploited?
What is the CVSS score of CVE-2024-37300?
How do I remediate CVE-2024-37300?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-37300
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