Bug 2568201 (CVE-2026-123306)

Summary: CVE-2026-123306 IntelliJ IDEA: IntelliJ IDEA: Interception of encrypted communications via improper certificate validation during headless execution
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in IntelliJ IDEA. Improper verification allows server certificates to be added to the application's trust store during headless execution. A remote attacker could exploit this vulnerability to conduct machine-in-the-middle (MitM) attacks, leading to the interception or tampering of sensitive encrypted communications.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-06 14:34:46 UTC
In JetBrains IntelliJ IDEA before 2026.3 improper checks allowed server certificates to be added to the trust store during headless runs