---
title: "CVE-2019-10255\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2019-10255?format=md
keywords: index, follow
---

# CVE-2019-10255

Publication date 28 March 2019

Last updated 25 August 2025

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**6.1 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2019-10255?format=md#impact-score)

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## Description

An Open Redirect vulnerability for all browsers in Jupyter Notebook before
5.7.7 and some browsers (Chrome, Firefox) in JupyterHub before 0.9.5 allows
crafted links to the login page, which will redirect to a malicious site
after successful login. Servers running on a base\_url prefix are not
affected.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| jupyter-notebook | 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Fixed 5.2.2-1ubuntu0.1 |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.1 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Changed |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.1 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10255)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-10255)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-10255)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-10255)

### Related Ubuntu Security Notices (USN)

+ [USN-5585-1](https://usn.ubuntu.com/USN-5585-1)
+ Jupyter Notebook vulnerabilities
+ 30 August 2022

### Other references

* <https://github.com/jupyter/notebook/commit/08c4c898182edbe97aadef1815cce50448f975cb>
* <https://github.com/jupyter/notebook/commit/70fe9f0ddb3023162ece21fbb77d5564306b913b>
* <https://blog.jupyter.org/open-redirect-vulnerability-in-jupyter-jupyterhub-adf43583f1e4>
* <https://github.com/jupyter/notebook/commit/979e0bd15e794ceb00cc63737fcd5fd9addc4a99>
* <https://www.cve.org/CVERecord?id=CVE-2019-10255>