{"action":"Upgrade oauthenticator to 0.12.2 or later.","affected":[{"fixed":"0.12.2","introduced":"0.12.0"}],"component":"oauthenticator","cve_ids":["CVE-2020-26250"],"ecosystem":"PyPI","epss":0.01132,"exploited":false,"fixed_versions":["0.12.2"],"ghsa_id":"GHSA-384w-5v3f-q499","id":"tcs_01M5KEV8KAD8J57YYR6VQSA6CM","modified_at":"2026-07-08T06:28:40.187996966Z","published_at":"2020-12-01T20:25:00Z","references":["https://osv.dev/vulnerability/GHSA-384w-5v3f-q499","https://github.com/jupyterhub/oauthenticator/security/advisories/GHSA-384w-5v3f-q499","https://nvd.nist.gov/vuln/detail/CVE-2020-26250","https://github.com/jupyterhub/oauthenticator/commit/a4aac191c16cf6281f3d346615aefa75702b02d7","https://github.com/jupyterhub/oauthenticator","https://github.com/jupyterhub/oauthenticator/blob/master/docs/source/changelog.md#0122---2020-11-30","https://github.com/pypa/advisory-database/tree/main/vulns/oauthenticator/PYSEC-2020-68.yaml","https://jupyterhub.readthedocs.io/en/1.2.2/getting-started/authenticators-users-basics.html#add-or-remove-users-from-the-hub"],"severity":{"label":"medium","score":6.3},"sources":[{"source":"osv","source_id":"GHSA-384w-5v3f-q499","url":"https://osv.dev/vulnerability/GHSA-384w-5v3f-q499"}],"summary":"Base class whitelist configuration ignored in OAuthenticator"}