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CVE-2026-111058

CVE-2026-111058 · Mercury: Unauthenticated Remote Code Execution via /api/kernels

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.8 · Critical · EPSS 0.5% · Public exploit · Fix available

Published
Updated

Stack: python

Affected products and versions

  • mercury

    Versions
    • < 3.2.6: Affected

    No fix published

  • mercury PyPI

    Versions
    • 1.1.6
    • 1.99.0
    • 1.99.1
    • 1.99.10
    • 1.99.2
    • 1.99.3
    • 1.99.4
    • 1.99.5
    • 1.99.6
    • 1.99.7
    • 1.99.8
    • 1.99.9
    • 2.0.0
    • 2.0.1
    • 2.0.10
    • 2.0.11
    • 2.0.12
    • 2.0.2
    • 2.0.3
    • 2.0.4
    • 2.0.5
    • 2.0.6
    • 2.0.7
    • 2.0.8
    • 2.0.9
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.1.3
    • 2.1.4
    • 2.1.5
    • 2.1.6
    • 2.1.7
    • 2.1.8
    • 2.1.9
    • 2.2.0
    • 2.2.1
    • 2.2.2
    • 2.2.3
    • 2.2.4
    • 2.2.5
    • 2.2.6
    • 2.2.7
    • 2.2.8
    • 2.2.9
    • 2.3.0
    • 2.3.1
    • 2.3.10
    • 2.3.2
    • 2.3.3
    • 2.3.4
    • 2.3.5
    • 2.3.6
    • 2.3.7
    • 2.3.8
    • 2.3.9
    • 2.4.0
    • 2.4.1
    • 2.4.2
    • 2.4.3
    • 3.0.0
    • 3.0.0a1
    • 3.0.0a10
    • 3.0.0a11
    • 3.0.0a12
    • 3.0.0a2
    • 3.0.0a3
    • 3.0.0a4
    • 3.0.0a5
    • 3.0.0a6
    • 3.0.0a7
    • 3.0.0a8
    • 3.0.0a9
    • 3.0.0b1
    • 3.0.0b2
    • 3.0.0b3
    • 3.0.0b4
    • 3.0.0b5
    • 3.0.0b6
    • 3.0.0rc1
    • 3.0.1
    • 3.0.2
    • 3.1.0
    • 3.1.1
    • 3.1.2
    • 3.1.4
    • 3.1.5
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.2.5
    Affected ranges
    • ECOSYSTEM: < 3.2.6

    Update to 3.2.6

Original sources

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