CVE-2026-111059
Published:October 19, 2026
Updated:October 20, 2026
Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.11, mr.Markdown converts attacker-controlled Markdown to HTML without sanitizing raw HTML before assigning it to an ipywidgets.HTML sink. Event-handler attributes and other active HTML can therefore reach the DOM and execute when another user views the application. This issue is fixed in version 3.2.11.
Affected Packages
https://github.com/mljar/mercury.git (GITHUB):
Affected version(s) >=v3.0.0 <v3.2.11Fix Suggestion:
Update to version v3.2.11mercury (PYTHON):
Affected version(s) >=3.0.0 <3.2.11Fix Suggestion:
Update to version 3.2.11mercury (PYTHON):
Affected version(s) >=3.0.0a1 <3.2.11Fix Suggestion:
Update to version 3.2.11Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE