Open Redirect Vulnerability in jupyter-server
Medium6.1CVE-2023-39968 · Published Aug 29, 2023 · updated Sep 10, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| jupyter-server PyPI | < 2.7.2 | 2.7.2 |
Details and references
### Impact Open Redirect Vulnerability. Maliciously crafted login links to known Jupyter Servers can cause successful login or an already logged-in session to be redirected to arbitrary sites, which should be restricted to Jupyter Server-served URLs. ### Patches Upgrade to Jupyter Server 2.7.2 ### Workarounds None. ### References Vulnerability reported by user davwwwx via the [bug bounty program](https://app.intigriti.com/programs/jupyter/jupyter/detail) [sponsored by the European Commission](https://commission.europa.eu/news/european-commissions-open-source-programme-office-starts-bug-bounties-2022-01-19_en) and hosted on the [Intigriti platform](https://www.intigriti.com/). - https://blog.xss.am/2023/08/cve-2023-39968-jupyter-token-leak/
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-601
- Also known as
- CVE-2023-39968, PYSEC-2023-155
- github.com/jupyter-server/jupyter_server/security/advisories/GHSA-r726-vmfq-j9j3
- nvd.nist.gov/vuln/detail/CVE-2023-39968
- github.com/jupyter-server/jupyter_server/commit/290362593b2ffb23c59f8114d76f77875de4b925
- blog.xss.am/2023/08/cve-2023-39968-jupyter-token-leak
- github.com/jupyter-server/jupyter_server
- github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2023-155.yaml
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF
More Jupyter advisories
All Jupyter| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 292023 | cross-site inclusion (XSSI) of files in jupyter-server CVE-2023-40170Medium4.6fixed in 2.7.2 | Medium4.6 | 2.7.2 |
| Dec 52023 | jupyter-server errors include tracebacks with path information CVE-2023-49080Medium4.3fixed in 2.11.2 | Medium4.3 | 2.11.2 |
| Jan 192024 | JupyterLab vulnerable to SXSS in Markdown Preview CVE-2024-22420Medium6.5fixed in 4.0.11, 7.0.7 | Medium6.5 | 4.0.11, 7.0.7 |
| Jan 192024 | JupyterLab vulnerable to potential authentication and CSRF tokens leak CVE-2024-22421High7.6fixed in 3.6.7, 4.0.11, 7.0.7 | High7.6 | 3.6.7, 4.0.11, 7.0.7 |
| Mar 282024 | Cross site scripting (XSS) in JupyterHub via Self-XSS leveraged by Cookie Tossing CVE-2024-28233High8.1fixed in 4.1.0 | High8.1 | 4.1.0 |
| Jun 62024 | Jupyter server on Windows discloses Windows user password hash CVE-2024-35178High7.5fixed in 2.14.1 | High7.5 | 2.14.1 |