CVE-2026-111058

Published: Oct 19, 2026Modified: Oct 19, 2026

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

Description

Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. Prior to 3.2.6, default tokenless deployments allow anonymous clients to create Jupyter kernels and send execute_request messages containing arbitrary Python. The endpoint blocklist does not cover /api/kernels, and the websocket wrapper previously tracked idle activity without authorizing executable messages. This issue is fixed in version 3.2.6.

Related CWEs

CWE-862

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

References (3)

https://github.com/mljar/mercury/commit/73a40ceb0becf057f495a5738ad7f5a5222a53e1

Source: security-advisories@github.com

https://github.com/mljar/mercury/releases/tag/3.2.6

Source: security-advisories@github.com

https://github.com/mljar/mercury/security/advisories/GHSA-rv4m-xm3f-3ccq

Source: security-advisories@github.com

Timeline

No history available yet.