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PatchSiren cyber security CVE debrief

CVE-2026-86505 JetBrains CVE debrief

A low-severity vulnerability was found in JetBrains IntelliJ IDEA before version 2026.2.2, where a missing project-trust check could leak project metadata to JetBrains Marketplace. This issue, with a CVSS score of 3.3, is caused by inadequate checks in the project trust settings, potentially exposing project information. Defenders should verify IntelliJ IDEA versions and assess project trust settings to prevent potential exposure. The CVE record and NVD entry provide limited information about the vulnerability, and further verification is required to determine the actual impact and affected versions.

Vendor
JetBrains
Product
IntelliJ IDEA
CVSS
LOW 3.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-07
Original CVE updated
2026-09-07
Advisory published
2026-09-07
Advisory updated
2026-09-07

Who should care

Defenders responsible for managing IntelliJ IDEA installations and project trust settings should assess exposure and verify versions. This includes reviewing the current version of IntelliJ IDEA, evaluating project trust settings, and updating to version 2026.2.2 or later if necessary. Additionally, defenders need to monitor JetBrains Marketplace for potential project metadata exposure and assess the impact on their

Why it matters

A low-severity vulnerability in JetBrains IntelliJ IDEA could leak project metadata to JetBrains Marketplace due to a missing project-trust check. Defenders should verify IntelliJ IDEA versions and assess project trust settings to prevent potential exposure.

  • Verification of IntelliJ IDEA versions and project trust settings is required to prevent potential metadata leakage
  • Defenders need to assess exposure based on project trust settings and update to version 2026.2.2 or later if necessary

Technical summary

The vulnerability, with a CVSS score of 3.3, is caused by a missing project-trust check in JetBrains IntelliJ IDEA before version 2026.2.2. This could potentially leak project metadata to JetBrains Marketplace. The issue arises from inadequate project trust checks, allowing unauthorized access to project information. To mitigate this, defenders should verify if their IntelliJ IDEA versions are up-to-date and assess exposure based on project trust settings.

Defensive priority

Defenders should verify if their IntelliJ IDEA versions are up-to-date and assess exposure based on project trust settings.

Recommended defensive actions

  • Verify IntelliJ IDEA version and update to 2026.2.2 or later if necessary
  • Assess project trust settings to prevent metadata leakage
  • Monitor JetBrains Marketplace for potential project metadata exposure

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine the actual impact and affected versions.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-86505 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-86505

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-86505 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-86505

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.