Description
In Jupyter Notebook before 5.7.8, an open redirect can occur via an empty netloc. This issue exists because of an incomplete fix for CVE-2019-10255.
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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | jupyter-notebook | No fix yet | — |
| Ubuntu 26.04 LTS | jupyter-notebook | No fix yet | — |
| Ubuntu 25.10 | jupyter-notebook | No fix yet | — |
| Ubuntu 22.04 LTS | jupyter-notebook | 6.4.8-1ubuntu0.1 | USN-5585-1 |
| Ubuntu 20.04 LTS | jupyter-notebook | 6.0.3-2ubuntu0.1 | USN-5585-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | jupyter-notebook | 5.2.2-1ubuntu0.1 | USN-5585-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | notebook | < 5.7.8 | 5.7.8 | GHSA-rcx2-m7jp-p9wj |
Advisories 1
- USN-5585-1 jupyter-notebook vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026