Auth bypass in Jupyterhub Oauthenticator
CVE-2020-26250
OAuthenticator is an OAuth login mechanism for JupyterHub. In oauthenticator from version 0.12.0 and before 0.12.2, the deprecated (in jupyterhub 1.2) configuration `Authenticator.whitelist`, which should be transparently mapped to `Authen…
Vulnerability class: Broken Access Control
EPSS: 0.004 (61.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.
Affected products
- Jupyterhub Oauthenticator — versions >= 0.12.0, < 0.12.2
Weakness classification (CWE)
References
- github.com/jupyterhub/oauthenticator/security/advisories/GHSA-384w-5v3f-q499 (x_refsource_CONFIRM)
- github.com/jupyterhub/oauthenticator/commit/a4aac191c16cf6281f3d346615aefa75702… (x_refsource_MISC)
- github.com/jupyterhub/oauthenticator/blob/master/docs/source/changelog.md (x_refsource_MISC)
- jupyterhub.readthedocs.io/en/1.2.2/getting-started/authenticators-users-basics… (x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-26250?
- CVE-2020-26250 is a medium-severity vulnerability in Jupyterhub Oauthenticator, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2020-12-01.
- How severe is CVE-2020-26250?
- Medium severity. CVSS v3 base score is 6.3 out of 10.