CVE-2026-86502: CWE-306 in JetBrains IntelliJ IDEA
Description
In JetBrains IntelliJ IDEA before 2026.2.2 missing TLS and authentication on the IJent gRPC server allowed local code execution on Remote Development hosts
CVSS v3.1
Score 8.4high
Affected software
JetBrains
IntelliJ IDEA
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
JetBrains IntelliJ IDEA versions prior to 2026.2.2 contain a security vulnerability identified as CWE-306 (Missing Authentication for Critical Function) in the IJent gRPC server component. The server does not enforce TLS encryption or authentication, which enables an attacker with local access to execute code remotely on Remote Development hosts. The vulnerability has a CVSS 3.1 base score of 8.4, indicating high severity with impacts on confidentiality, integrity, and availability.
Potential Impact
An attacker with local access to the affected system can execute arbitrary code on Remote Development hosts due to the absence of TLS and authentication on the IJent gRPC server. This compromises the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
A fix is available in JetBrains IntelliJ IDEA version 2026.2.2. Users should upgrade to this version or later to remediate the vulnerability. Since this is not a cloud service, remediation depends on applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:40.702Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ee85bacd9273b49f0e44a
Added to database: 09/07/2026, 16:37:47 UTC
Last enriched: 09/15/2026, 00:45:51 UTC
Last updated: 10/22/2026, 13:15:24 UTC
Views: 98
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