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CVE-2026-111057— Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass

Quick assessment

Affected
mljar mercury
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mercury 是一个用于将 Jupyter Notebook 作为 Web 应用程序和仪表盘进行共享的 Python 框架。在 3.0.0 至 3.2.4 版本中，由于 中缺少一个逗号，导致 和 的正则表达式字面量被错误地拼接在一起。因此，发往 的请求能够绕过匿名端点黑名单，并访问到 Jupyter Server 的终端 API。未认证的攻击者可利用由此产生的交互式操作系统 Shell 执行命令，并访问 Mercury 进程所能触及的数据。该问题已在 3.2.4 版本中修复。

CVSS 10.0 · Critical

Affected Version Matrix 1

VendorProduct Version RangeStatus
mljar mercury >= 3.0.0, < 3.2.4 affected
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I. Basic Information for CVE-2026-111057

Vulnerability Information
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Vulnerability Title
Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不正确的正则表达式
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
mljar mercury >= 3.0.0, < 3.2.4 -

II. Public POCs for CVE-2026-111057

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III. Intelligence Information for CVE-2026-111057

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Other References for CVE-2026-111057 (3)

Same Patch Batch · mljar · 2026-10-19 · 3 CVEs total

CVE-2026-111058 9.8 CRITICAL Mercury: Unauthenticated Remote Code Execution via /api/kernels
CVE-2026-111059 6.1 MEDIUM Mercury: Stored / DOM Cross-Site Scripting (XSS): mr.Markdown renders untrusted content as

IV. Related Vulnerabilities

Same product: mercury
Same vendor: mljar
Same weakness: CWE-185

V. Comments for CVE-2026-111057

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