CVE-2026-123281

Notebook Code Execution via Sidecar Container Mount Broker in JetBrains Datalore

Published Nov 6, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
In JetBrains Datalore before 2026.4 notebook code could execute commands in the sidecar container via the mount broker

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Jetbrains
Jetbrains datalore
Vendors & Products Jetbrains
Jetbrains datalore
Type Values Removed Values Added
Title Notebook Code Execution via Sidecar Container Mount Broker in JetBrains Datalore
Type Values Removed Values Added
Description In JetBrains Datalore before 2026.4 notebook code could execute commands in the sidecar container via the mount broker
Weaknesses CWE-88
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
JetBrains
Published
Updated
Nov 10, 2026, 6:33 PM
Reserved
Nov 5, 2026, 6:38 PM
Status
Undergoing Analysis
Published
Nov 6, 2026, 11:17 AM
Modified
Nov 10, 2026, 7:20 PM