Description
Jupyter Server before version 1.0.6 has an Open redirect vulnerability. A maliciously crafted link to a jupyter server could redirect the browser to a different website. All jupyter servers are technically affected, however, these maliciously crafted links can only be reasonably made for known jupyter server hosts. A link to your jupyter server may appear safe, but ultimately redirect to a spoofed server on the public internet.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| jupyter | jupyter_server | < 1.0.6 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | jupyter-server | 1.0.7-1 | — |
| Debian 13 | jupyter-server | 1.0.7-1 | — |
| Debian 12 | jupyter-server | 1.0.7-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-jupyter-server | 2.20.0-1.3 | openSUSE-SU-2026:12012-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | jupyter-server | < 1.0.6 | 1.0.6 | GHSA-grfj-wjv9-4f9v |
Advisories 1
- openSUSE-SU-2026:12012-1 python313-jupyter-server-2.20.0-1.3 on GA media SUSE / openSUSE Security Updates · Oct 5, 2026