jupyter-scheduler's endpoint is missing authentication
Impact
jupyter_scheduler is missing an authentication check in Jupyter Server on an API endpoint (GET /scheduler/runtime_environments) which lists the names of the Conda environments on the server. In affected versions, jupyter_scheduler allows an unauthenticated user to obtain the list of Conda environment names on the server. This reveals any information that may be present in a Conda environment name.
This issue does not allow an unauthenticated third party to read, modify, or enter the Conda environments present on the server where jupyter_scheduler is running. This issue only reveals the list of Conda environment names.
Impacted versions: >=1.0.0,<=1.1.5 ; ==1.2.0 ; >=1.3.0,<=1.8.1 ; >=2.0.0,<=2.5.1
Patches
jupyter-scheduler==1.1.6jupyter-scheduler==1.2.1jupyter-scheduler==1.8.2jupyter-scheduler==2.5.2
Workarounds
Server operators who are unable to upgrade can disable the jupyter-scheduler extension with:
jupyter server extension disable jupyter-schedulerReferences
If you have any questions or comments about this advisory we ask that you contact AWS/Amazon Security via our vulnerability reporting page [1] or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.
[1] Vulnerability reporting page: https://aws.amazon.com/security/vulnerability-reporting
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | jupyter-scheduler | >= 1.0.0, < 1.1.6, >= 1.2.0, < 1.2.1, >= 1.3.0, < 1.8.2, >= 2.0.0, < 2.5.2 | 1.1.6, 1.2.1, 1.8.2, 2.5.2 |
References
- https://github.com/jupyter-server/jupyter-scheduler/security/advisories/GHSA-v9g2-g7j4-4jxc
- https://nvd.nist.gov/vuln/detail/CVE-2024-28188
- https://github.com/jupyter-server/jupyter_server/pull/1392
- https://github.com/jupyter-server/jupyter-scheduler/commit/06435a2277bb2b8f441ec9cedafa474572b92c5d
- https://github.com/jupyter-server/jupyter-scheduler/commit/a621b386397280cc8ee5a208dca4607cb71cdd65
- https://github.com/jupyter-server/jupyter-scheduler/commit/d428ac871909444e175ba421bf8ab4980d6ebf9f
- https://github.com/jupyter-server/jupyter-scheduler/commit/f4137a779fdf0cc4a9688a42dd8c6e7ade60f044
- https://github.com/jupyter-server/jupyter-scheduler
- https://pypi.org/project/jupyter-scheduler
- https://github.com/advisories/GHSA-v9g2-g7j4-4jxc
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-200, CWE-287- Platform
- Python (PyPI)
- Package
jupyter-scheduler- Disclosed
- 23.05.2024
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1479 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-v9g2-g7j4-4jxc - CC BY 4.0
Vulnerability history: jupyter-scheduler
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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