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CVE-2022-31027

17
FAUCET Score

CVE-2022-31027 affects Jupyter OAuthenticator, specifically the CILogonOAuthenticator component, by failing to properly verify the identity provider used during login. This allows unauthorized users to bypass access restrictions by registering an email address with a permitted domain (e.g., berkeley.edu) through an unapproved identity provider like GitHub. The vulnerability has a CVSS score of 6.5 (MEDIUM), indicating a network-based attack with low complexity, requiring low privileges, and potentially leading to high confidentiality impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 15.0.0CPE matchmatch criteria
cpe:2.3:a:jupyter:oauthenticator:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.2MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 45th percentile among its peer group of 21,977 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: oauthenticatorFixed in: 15.0.0

Vendor Advisories (1)

pipGHSA-r7v4-jwx9-wx43medium

Authorization Bypass Through User-Controlled Key when using CILogonOAuthenticator oauthenticator

Jun 6, 2022

References

github.com / jupyterhub/oauthenticator/security/advisories/GHSA-r7v4-jwx9-wx43
Third Party Advisory