PYSEC-2026-2238
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/oauthenticator/PYSEC-2026-2238.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-2238
- Aliases
- Published
- 2026-04-03T22:16:26.483Z
- Modified
- 2026-07-13T07:15:50.511399138Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
OAuthenticator is software that allows OAuth2 identity providers to be plugged in and used with JupyterHub. Prior to version 17.4.0, an authentication bypass vulnerability in oauthenticator allows an attacker with an unverified email address on an Auth0 tenant to login to JupyterHub. When email is used as the usrname_claim, this gives users control over their username and the possibility of account takeover. This issue has been patched in version 17.4.0.
- References
Affected packages
PyPI / oauthenticator
Package
- Name
- oauthenticator
- View open source insights on deps.dev
- Purl
- pkg:pypi/oauthenticator
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed17.4.0
Affected versions
0.*
0.1.0
0.2.0
0.3.0
0.4.0
0.4.1
0.5.0
0.5.1
0.6.0
0.6.1
0.6.2
0.7.0
0.7.1
0.7.2
0.7.3
0.8.0
0.8.1
0.8.2
0.9.0
0.10.0
0.11.0
0.12.0
0.12.1
0.12.2
0.12.3
0.13.0
14.*
14.0.0
14.1.0
14.2.0
15.*
15.0.0
15.0.1
15.1.0
16.*
16.0.0
16.0.1
16.0.2
16.0.3
16.0.4
16.0.5
16.0.6
16.0.7
16.1.0
16.1.1
16.2.0
16.2.1
16.3.0
16.3.1
17.*
17.0.0
17.1.0
17.2.0
17.3.0