CVE-2026-111057
Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass
CVSS Score
10.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-185 CWE-284 |
| Vendor | mljar |
| Product | mercury |
| Published | Oct 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
mljar / mercury
>= 3.0.0, < 3.2.4