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Mercury: Unauthenticated Remote Code Execution in /api/terminals - access control bypass

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-111057

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-111057

mercury

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "mljar",
    "product": "mercury",
    "versions": [
      {
        "status": "affected",
        "version": ">= 3.0.0, < 3.2.4"
      }
    ]
  }
]
Related CVEs
CVE-2026-111057

Source reference: /cveMetadata/cveId

Publisher severity

critical

Source reference: /containers/cna/metrics

Event
#38943 · Revision 1
Added to Heist Feed
Publisher date
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