CVE-2026-86504: CWE-829 in JetBrains IntelliJ IDEA
Description
In JetBrains IntelliJ IDEA before 2026.2.2 missing project-trust confirmation before building a Dev Container allowed host-level code execution
CVSS v3.1
Score 7.8high
Affected software
JetBrains
IntelliJ IDEA
pkg:maven/com.jetbrains/intellij-ideaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86504 is a security vulnerability in JetBrains IntelliJ IDEA versions prior to 2026.2.2. The issue arises from the lack of project-trust confirmation before building a Dev Container, which can be exploited to execute code at the host level. This vulnerability is categorized under CWE-829 (Inclusion of Functionality from Untrusted Control Sphere). The CVSS v3.1 base score is 7.8, indicating a high impact with attack vector local, low attack complexity, no privileges required, user interaction required, and full impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code on the host system, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. The attack requires local access and user interaction but does not require prior privileges.
Mitigation Recommendations
A fix is available in JetBrains IntelliJ IDEA version 2026.2.2. Users should upgrade to version 2026.2.2 or later to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:41.211Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ee85bacd9273b49f0e44e
Added to database: 09/07/2026, 16:37:47 UTC
Last enriched: 09/15/2026, 00:45:55 UTC
Last updated: 10/22/2026, 13:15:24 UTC
Views: 107
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