CVE-2026-123307

Unauthenticated External Connections via Run Configurations in IntelliJ IDEA

Published Nov 6, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
In JetBrains IntelliJ IDEA before 2026.3,
2026.2.4 unauthenticated connection to an arbitrary host via run configurations was possible

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
CPEs cpe:2.3:a:jetbrains:intellij_idea:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Unauthenticated External Connections via Run Configurations in IntelliJ IDEA
Type Values Removed Values Added
First Time appeared Jetbrains
Jetbrains intellij Idea
Vendors & Products Jetbrains
Jetbrains intellij Idea
Type Values Removed Values Added
Description In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 unauthenticated connection to an arbitrary host via run configurations was possible
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
JetBrains
Published
Updated
Nov 7, 2026, 6:26 PM
Reserved
Nov 5, 2026, 6:38 PM
Status
Analyzed
Published
Nov 6, 2026, 11:17 AM
Modified
Nov 10, 2026, 7:41 PM