Mercury is a Python framework for sharing Jupyter notebooks as web applications and dashboards. From 3.0.0 until 3.2.4, a missing comma in BLOCKED_PATTERNS concatenates the /lab and /api/terminals regular-expression literals. Requests to /api/terminals therefore bypass the anonymous endpoint blocklist and reach Jupyter Server's terminal API. An unauthenticated attacker can use the resulting interactive operating-system shell to execute commands and access data available to the Mercury process. This issue is fixed in version 3.2.4.
History

Wed, 28 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Mljar
Mljar mercury
Vendors & Products Mljar
Mljar mercury

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. From 3.0.0 until 3.2.4, a missing comma in BLOCKED_PATTERNS concatenates the /lab and /api/terminals regular-expression literals. Requests to /api/terminals therefore bypass the anonymous endpoint blocklist and reach Jupyter Server's terminal API. An unauthenticated attacker can use the resulting interactive operating-system shell to execute commands and access data available to the Mercury process. This issue is fixed in version 3.2.4.
Title Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass
Weaknesses CWE-185
CWE-284
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-19T16:04:07.065Z

Updated: 2026-10-28T15:31:24.524Z

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

Link: CVE-2026-111057

cve-icon Vulnrichment

Updated: 2026-10-28T15:30:59.302Z

cve-icon NVD

Status : Deferred

Published: 2026-10-19T16:17:03.810

Modified: 2026-10-28T16:17:00.940

Link: CVE-2026-111057

cve-icon Redhat

No data.