csirt@kutim:~/threat-intel/cve/CVE-2020-26250

Katalog CVE

CVSS 6.3 · Medium EPSS 1,1%

Kerentanan Incorrect Authorization pada jupyter oauthenticator. Skor CVSS 3.1 6.3 (Medium) menurut NVD.

Deskripsi (NVD)

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 `Authenticator.allowed_users` with a warning, is instead ignored by OAuthenticator classes, resulting in the same behavior as if this configuration has not been set. If this is the only mechanism of authorization restriction (i.e. no group or team restrictions in configuration) then all authenticated users will be allowed. Provider-based restrictions, including deprecated values such as `GitHubOAuthenticator.org_whitelist` are **not** affected. All users of OAuthenticator 0.12.0 and 0.12.1 with JupyterHub 1.2 (JupyterHub Helm chart 0.10.0-0.10.5) who use the `admin.whitelist.users` configuration in the jupyterhub helm chart or the `c.Authenticator.whitelist` configuration directly. Users of other deprecated configuration, e.g. `c.GitHubOAuthenticator.team_whitelist` are **not** affected. If you see a log line like this and expect a specific list of allowed usernames: "[I 2020-11-27 16:51:54.528 JupyterHub app:1717] Not using allowed_users. Any authenticated user will be allowed." you are likely affected. Updating oauthenticator to 0.12.2 is recommended. A workaround is to replace the deprecated `c.Authenticator.whitelist = ...` with `c.Authenticator.allowed_users = ...`. If any users have been authorized during this time who should not have been, they must be deleted via the API or admin interface, per the referenced documentation.

Rincian

Terbit di NVD
1 Desember 2020
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
6.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-863: Incorrect Authorization
EPSS (30 hari)
1,1% peluang dieksploitasi; lebih tinggi dari 65,5% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
jupyter oauthenticator Versi 0.12.0 hingga sebelum 0.12.2

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.