CVE-2026-86505: CWE-201 in JetBrains IntelliJ IDEA
Description
CVE-2026-86505 is a low-severity vulnerability in JetBrains IntelliJ IDEA before version 2026.2.2 where a missing project-trust check caused leakage of project metadata to JetBrains Marketplace. This issue does not allow unauthorized modification or denial of service but may expose some project information. The vulnerability has a CVSS score of 3.3 and requires user interaction with low privileges. No known exploits are reported in the wild. A fix is implied by the versioning but no explicit patch link is provided.
CVSS v3.1
Score 3.3low
Affected software
JetBrains
IntelliJ IDEA
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-86505) in JetBrains IntelliJ IDEA versions prior to 2026.2.2 involves a missing project-trust verification step that results in unintended leakage of project metadata to the JetBrains Marketplace. The flaw is categorized under CWE-201 (Information Exposure Through Sent Data). The CVSS 3.1 vector indicates local attack vector with low complexity, no privileges required, user interaction needed, and limited confidentiality impact without integrity or availability impact.
Potential Impact
The impact is limited to confidentiality as some project metadata may be exposed to JetBrains Marketplace without proper trust verification. There is no impact on integrity or availability. The vulnerability requires local access and user interaction, reducing the risk of widespread exploitation. No known active exploitation has been reported.
Mitigation Recommendations
Users should upgrade IntelliJ IDEA to version 2026.2.2 or later where the missing project-trust check is addressed. Since no official patch link is provided, verify the vendor advisory for confirmation of the fix. Until then, avoid interacting with untrusted projects that might trigger metadata leakage.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:41.489Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ee85dacd9273b49f0e474
Added to database: 09/07/2026, 16:37:49 UTC
Last enriched: 09/15/2026, 01:19:20 UTC
Last updated: 10/22/2026, 13:15:24 UTC
Views: 113
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