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vulnerability · Mon 19 Oct 2026 · 17:00 UTC

GHSA-f8c7-rwf9-fmgm: Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass

Filed UTCSource GTH ↗

A missing comma in mercury_app/block_handler.py's BLOCKED_PATTERNS list causes the blocklist to fail to cover the /api/terminals endpoint. As a result, any unauthenticated attacker can spawn a full, interactive OS-level shell on the host running Mercury. ### Details The blocklist in mercury_app/block_handler.py is defined as: ``` BLOCKED_PATTERNS = [ # JupyterLab UI + API r"/lab(?!/(?:extensions/|api/settings(?:/|$)|api/translations(?:/|$)))(?:/.*)? …

Signals

as the pipeline stamped them
High
Critical vulnerability — CVSS 10
What to do
  1. Critical severity — schedule an urgent patch.

CVE

KEV from CISA · EPSS from FIRST
CVE ids in this dispatch with their KEV status and EPSS score
IdKEVEPSSReference
CVE-2026-111057——NVD ↗

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