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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-rv4m-xm3f-3ccq Mercury: Unauthenticated Remote Code Execution via /api/kernels
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 19 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 19 Oct 2026 16:15:00 +0000

Type Values Removed Values Added
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.
Title Mercury: Unauthenticated Remote Code Execution via /api/kernels
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-19T17:06:53.899Z

Reserved: 2026-10-15T12:47:13.664Z

Link: CVE-2026-111058

cve-icon Vulnrichment

Updated: 2026-10-19T17:05:32.060Z

cve-icon NVD

Status : Received

Published: 2026-10-19T16:17:03.957

Modified: 2026-10-19T17:17:02.850

Link: CVE-2026-111058

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T17:30:13Z

Weaknesses