Medium severity · published Aug 28, 2023
CVE-2023-39968
Open Redirect Vulnerability in jupyter-server
6.1
CVSS
0.7%
EPSS
No
On KEV
Description
jupyter-server is the backend for Jupyter web applications. 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. This issue has been addressed in commit `29036259` which is included in release 2.7.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JU
jupyter_server · jupyter-server
< 2.7.2 · source: vendor
JS
Jupyter Server · Jupyter
before 2.7.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-39968
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-39968
Patch
https://github.com/jupyter-server/jupyter_server/commit/290362593b2ffb23c59f8114d76f77875de4b925
Vendor Advisory
https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-r726-vmfq-j9j3
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF/
More from jupyter_server
8.8
CVE-2026-114135
Jupyter Server: Gateway WebSocket handler bypasses kernel execute authorization
8.8
CVE-2026-35397
jupyter-server path traversal allows access to sibling directories sharing root_dir name prefix
7.5
CVE-2024-35178
Jupyter server on Windows discloses Windows user password hash
7.3
CVE-2026-40110
jupyter-server CORS origin validation bypass via unanchored regex in allow_origin_pat
7.1
CVE-2026-86049
Jupyter Server: 5xx request logging leaks token-bearing Referer header values