CVE-2026-123839
Received Received - Intake

Remote Code Execution in JetBrains IntelliJ IDEA

Publication date: 2026-11-06

Last updated on: 2026-11-06

Assigner: JetBrains s.r.o.

Description
In JetBrains IntelliJ IDEA before 2026.3 opening arbitrary URLs without confirmation was possible via the Remote Development port forwarding model

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Meta Information

Published
2026-11-06
Last Modified
2026-11-06
Generated
2026-11-06
AI Q&A
2026-11-06
EPSS Evaluated
N/A
NVD
CVE-2026-123839
EUVD
EUVD-2026-118342

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
JetBrains IntelliJ IDEA From 0 (inc) to 2026.3 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-357 The user interface provides a warning to a user regarding dangerous or sensitive operations, but the warning is not noticeable enough to warrant attention.

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Executive Summary

This vulnerability in JetBrains IntelliJ IDEA before version 2026.3 allows opening arbitrary URLs without user confirmation through the Remote Development port forwarding feature. This could potentially expose users to malicious links or phishing attempts.

Impact Analysis

The vulnerability may allow attackers to trick users into visiting malicious websites by exploiting the automatic URL opening feature. This could lead to phishing attacks, malware downloads, or unauthorized access to sensitive data.

Mitigation Strategies

Update JetBrains IntelliJ IDEA to version 2026.3 or later to address the vulnerability.

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