Bug 2568191 (CVE-2026-123307)

Summary: CVE-2026-123307 IntelliJ IDEA: IntelliJ IDEA: unauthorized connection to arbitrary hosts via run configurations
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in IntelliJ IDEA. Under certain conditions requiring user interaction, an attacker can manipulate run configurations to cause the application to initiate unauthenticated connections to an arbitrary host. This vulnerability could lead to unauthorized information disclosure or compromise of project integrity.
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Description OSIDB Bzimport 2026-11-06 14:34:07 UTC
In JetBrains IntelliJ IDEA before 2026.3, 
2026.2.4 unauthenticated connection to an arbitrary host via run configurations was possible