Upstream information

CVE-2026-42557 at MITRE

Description

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. Prior to 4.5.7, JupyterLab's HTML sanitizer allowlists data-commandlinker-command and data-commandlinker-args on button elements, while CommandLinker listens for all click events on document.body and executes the named command without checking whether the element came from trusted JupyterLab UI. A notebook with a pre-saved HTML cell output containing a deceptive button can trigger arbitrary JupyterLab commands - including arbitrary code execution - on a single user click, without any code being submitted for execution by the user. This vulnerability is fixed in 4.5.7.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v4 Scores
CVSS detail CNA (GitHub)
Base Score 8.6
Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction Active
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1265269 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • jupyter-jupyterlab >= 4.5.7-1.1
  • jupyter-notebook >= 7.5.6-1.1
  • python311-jupyterlab >= 4.5.7-1.1
  • python311-notebook >= 7.5.6-1.1
  • python313-jupyterlab >= 4.5.7-1.1
  • python313-notebook >= 7.5.6-1.1
  • python314-jupyterlab >= 4.5.7-1.1
  • python314-notebook >= 7.5.6-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10748
openSUSE-Tumbleweed-2026-10749

SUSE Timeline for this CVE

CVE page created: Tue May 12 13:44:15 2026
CVE page last modified: Thu May 14 15:32:13 2026