CVE-2022-31027

MEDIUMNVD 4.24.2—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.2 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 50% 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).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.2
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.2Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

OAuthenticator is an OAuth token library for the JupyerHub login handler. CILogonOAuthenticator is provided by the OAuthenticator package, and lets users log in to a JupyterHub via CILogon. This is primarily used to restrict a JupyterHub only to users of a given institute. The allowed_idps configuration trait of CILogonOAuthenticator is documented to be a list of domains that indicate the institutions whose users are authorized to access this JupyterHub. This authorization is validated by ensuring that the *email* field provided to us by CILogon has a *domain* that matches one of the domains listed in allowed_idps.If allowed_idps contains berkeley.edu, you might expect only users with valid current credentials provided by University of California, Berkeley to be able to access the JupyterHub. However, CILogonOAuthenticator does *not* verify which provider is used by the user to login, only the email address provided. So a user can login with a GitHub account that has email set to @berkeley.edu, and that will be treated exactly the same as someone logging in using the UC Berkeley official Identity Provider. The patch fixing this issue makes a *breaking change* in how allowed_idps is interpreted. It's no longer a list of domains, but configuration representing the EntityID of the IdPs that are allowed, picked from the list maintained by CILogon. Users are advised to upgrade.

CVSS v3
4.2
EG Score
4.2(medium)
EPSS
35.0%
KEV
Not listed

Published

June 9, 2022

Last Modified

November 21, 2024

References (2)

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
oauthenticator0.1.0 ... 14.2.0 (28 versions)15.0.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 46× 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.

  1. 2026-07-11 08:25 UTCEPSS rescore
  2. 2026-07-11 08:25 UTCEPSS rescore
  3. 2026-07-09 19:07 UTCEPSS rescore
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  14. 2026-07-01 15:04 UTCEPSS rescore
  15. 2026-06-30 23:20 UTCEPSS rescore
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  17. 2026-06-29 14:04 UTCEPSS rescore
  18. 2026-06-29 07:32 UTCOSV refresh
  19. 2026-06-28 14:06 UTCEPSS rescore
  20. 2026-06-28 04:54 UTCEPSS rescore
  21. 2026-06-27 03:07 UTCEPSS rescore
  22. 2026-06-25 13:48 UTCEPSS rescore
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  24. 2026-06-24 14:03 UTCEPSS rescore
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  1. 2026-06-23 21:31 UTCEPSS rescore
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  3. 2026-06-22 14:24 UTCEPSS rescore
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  5. 2026-06-21 14:55 UTCEPSS rescore
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  7. 2026-06-21 01:58 UTCEPSS rescore
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  9. 2026-06-19 19:24 UTCEPSS rescore
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  11. 2026-06-18 17:51 UTCEPSS rescore
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  17. 2026-06-15 17:46 UTCEPSS rescore
  18. 2026-06-14 23:15 UTCEPSS rescore
  19. 2026-06-13 22:58 UTCEPSS rescore
  20. 2026-06-12 23:10 UTCEPSS rescore
  21. 2026-06-12 23:10 UTCEPSS rescore
  22. 2026-06-12 00:27 UTCOSV refresh
  23. 2026-06-11 13:58 UTCEPSS rescore
  24. 2026-06-11 13:58 UTCEPSS rescore
  25. 2026-06-10 22:16 UTCEPSS rescore
  26. 2026-06-10 13:20 UTCEPSS rescore
  27. 2026-06-08 14:15 UTCEPSS rescore
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  29. 2026-06-07 15:23 UTCEPSS rescore
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  40. 2026-06-02 20:11 UTCEPSS rescore
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  43. 2026-06-01 13:50 UTCEPSS rescore
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  45. 2026-05-31 22:29 UTCEPSS rescore
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  48. 2026-05-31 00:15 UTCEPSS rescore
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  50. 2026-05-29 13:43 UTCEPSS rescore
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  52. 2026-05-28 13:43 UTCEPSS rescore
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  55. 2026-05-27 13:39 UTCEPSS rescore
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  58. 2026-05-26 07:17 UTCEPSS rescore
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  60. 2026-05-26 07:17 UTCEPSS rescore
  61. 2026-05-25 20:55 UTCEG score recompute
  62. 2026-05-24 16:51 UTCEPSS rescore

Frequently asked(5)

What is CVE-2022-31027?
CVE-2022-31027 is a medium vulnerability published on June 9, 2022. OAuthenticator is an OAuth token library for the JupyerHub login handler. CILogonOAuthenticator is provided by the OAuthenticator package, and lets users log in to a JupyterHub via CILogon. This is primarily used to restrict a JupyterHub only to users of a given institute. The allowedidps…
When was CVE-2022-31027 disclosed?
CVE-2022-31027 was first published in the National Vulnerability Database on June 9, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-31027 actively exploited?
CVE-2022-31027 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-31027?
CVE-2022-31027 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2022-31027?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-31027, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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