CVE-2026-111091

Untrusted MCP Server Configuration Allows Code Execution in JetBrains Junie CLI

Published Oct 15, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
In JetBrains Junie CLI before 26.8.3 code execution was possible via an untrusted project's MCP server configuration

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
Title Untrusted MCP Server Configuration Allows Code Execution in JetBrains Junie CLI
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description In JetBrains Junie CLI before 26.8.3 code execution was possible via an untrusted project's MCP server configuration
Weaknesses CWE-829
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

Subscriptions

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Weaknesses

Sources

Status
PUBLISHED
Assigner
JetBrains
Published
Updated
Oct 15, 2026, 4:05 PM
Reserved
Oct 15, 2026, 3:20 PM
Status
Awaiting Analysis
Published
Oct 15, 2026, 4:17 PM
Modified
Oct 15, 2026, 5:17 PM