An issue was discovered in Project Jupyter JupyterHub OAuthenticator 0.6.x before 0.6.2…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
An issue was discovered in Project Jupyter JupyterHub OAuthenticator 0.6.x before 0.6.2 and 0.7.x before 0.7.3. When using JupyterHub with GitLab group whitelisting for access control, group membership was not checked correctly, allowing members not in the whitelisted groups to create accounts on the Hub. (Users were not allowed to access other users' accounts, but could create their own accounts on the Hub linked to their GitLab account. GitLab authentication not using gitlab_group_whitelist is unaffected. No other Authenticators are affected.)
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | oauthenticator (PyPI) | 0.6 to before 0.6.2 | 0.6.2 | Patch available | GHSA-8x3m-m3x9-54fj |
| — | oauthenticator (PyPI) | 0.7 to before 0.7.3 | 0.7.3 | Patch available | GHSA-8x3m-m3x9-54fj |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- oauthenticator (PyPI) Vendor— Affected 0.6 to before 0.6.2 Fixed in 0.6.2 Patch available GHSA-8x3m-m3x9-54fj
- oauthenticator (PyPI) Vendor— Affected 0.7 to before 0.7.3 Fixed in 0.7.3 Patch available GHSA-8x3m-m3x9-54fj
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jupyter:oauthenticator:0.6.0:*:*:*:*:*:*:* | 0.6.0 | Vulnerable | jupyterlab |
| cpe:2.3:a:jupyter:oauthenticator:0.6.1:*:*:*:*:*:*:* | 0.6.1 | Vulnerable | jupyterlab |
| cpe:2.3:a:jupyter:oauthenticator:0.7.0:*:*:*:*:*:*:* | 0.7.0 | Vulnerable | jupyterlab |
| cpe:2.3:a:jupyter:oauthenticator:0.7.1:*:*:*:*:*:*:* | 0.7.1 | Vulnerable | jupyterlab |
| cpe:2.3:a:jupyter:oauthenticator:0.7.2:*:*:*:*:*:*:* | 0.7.2 | Vulnerable | jupyterlab |
- cpe:2.3:a:jupyter:oauthenticator:0.6.0:*:*:*:*:*:*:* Versions 0.6.0 Vulnerable ·jupyterlab
- cpe:2.3:a:jupyter:oauthenticator:0.6.1:*:*:*:*:*:*:* Versions 0.6.1 Vulnerable ·jupyterlab
- cpe:2.3:a:jupyter:oauthenticator:0.7.0:*:*:*:*:*:*:* Versions 0.7.0 Vulnerable ·jupyterlab
- cpe:2.3:a:jupyter:oauthenticator:0.7.1:*:*:*:*:*:*:* Versions 0.7.1 Vulnerable ·jupyterlab
- cpe:2.3:a:jupyter:oauthenticator:0.7.2:*:*:*:*:*:*:* Versions 0.7.2 Vulnerable ·jupyterlab
Remediation
- Fix · GHSA-8x3m-m3x9-54fj oauthenticator (PyPI) Fixed in 0.6.2 Advisory →
- Fix · GHSA-8x3m-m3x9-54fj oauthenticator (PyPI) Fixed in 0.7.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2018-7206
- 2026-10-03 Alias added: GHSA-8x3m-m3x9-54fj
References
Advisory 4
More jupyterlab Oauthenticator vulnerabilities
- TI-2026-25605 OAuthenticator: Authentication Bypass in Auth0OAuthenticator via Unverified Email Claims CVSS 3.1HIGH 8.8
- TI-2024-19215 GoogleOAuthenticator.hosted_domain incorrectly verifies membership of an Google organization/workspace CVSS 3.1CRITICAL 9.1
- TI-2020-16071 Base class whitelist configuration ignored in OAuthenticator CVSS 3.1MEDIUM 6.3
- TI-2022-13072 Authorization Bypass Through User-Controlled Key when using CILogonOAuthenticator in oauthenticator CVSS 3.1MEDIUM 6.5
Sources
- CVE-2018-7206 · CVE Program
- CVE-2018-7206 · NVD
- FIRST EPSS
- GHSA-8x3m-m3x9-54fj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences