EUVD-2020-0118

🗓️ 07 Oct 2025 00:30:54Reported by EUVDType

OAuthenticator versions 0.12.0 to 0.12.1 ignore user whitelist, allowing all authenticated users access.

Reporter	Title	Published	Views	Family All 11
Circl	CVE-2020-26250	2 Dec 202000:54	–	circl
CNNVD	JupyterHub Oauthenticator Security Vulnerability	1 Dec 202000:00	–	cnnvd
CVE	CVE-2020-26250	1 Dec 202020:30	–	cve
Cvelist	CVE-2020-26250 Base class whitelist configuration ignored in OAuthenticator	1 Dec 202020:30	–	cvelist
Github Security Blog	Base class whitelist configuration ignored in OAuthenticator	1 Dec 202020:25	–	github
NVD	CVE-2020-26250	1 Dec 202021:15	–	nvd
OSV	GHSA-384W-5V3F-Q499 Base class whitelist configuration ignored in OAuthenticator	1 Dec 202020:25	–	osv
OSV	PYSEC-2020-68	1 Dec 202021:15	–	osv
Prion	Design/Logic Flaw	1 Dec 202021:15	–	prion
PyPA	PYSEC-2020-68	1 Dec 202021:15	–	pypa

[
  {
    "enisaIdVendor": [
      {
        "id": "154f0517-ea48-34de-b669-83f674d85bf6",
        "vendor": {
          "name": "jupyterhub"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "bb479d0c-4075-3d3a-95f7-11ecb75e64f5",
        "product": {
          "name": "oauthenticator"
        },
        "product_version": "0.12.0, < 0.12.2"
      }
    ]
  }
]

Source	Link
github	www.github.com/jupyterhub/oauthenticator/blob/master/docs/source/changelog.md
github	www.github.com/jupyterhub/oauthenticator/commit/a4aac191c16cf6281f3d346615aefa75702b02d7
jupyterhub	www.jupyterhub.readthedocs.io/en/1.2.2/getting-started/authenticators-users-basics.html
github	www.github.com/jupyterhub/oauthenticator/security/advisories/GHSA-384w-5v3f-q499
nvd	www.nvd.nist.gov/vuln/detail/CVE-2020-26250
github	www.github.com/pypa/advisory-database/tree/main/vulns/oauthenticator/PYSEC-2020-68.yaml
github	www.github.com/advisories/GHSA-293c-r3p4-g63r

07 Oct 2025 00:30Current

6.4Medium risk

Vulners AI Score6.4

CVSS 3.16.3

CVSS 23.5

EPSS0.0041