What is CVE-2026-86504?

CVE-2026-86504 is a high-severity vulnerability in Jetbrains Intellij Idea, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 7.8/10. Published 2026-09-07.

How severe is CVE-2026-86504?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Jetbrains Intellij Idea

CVE-2026-86504

In JetBrains IntelliJ IDEA before 2026.2.2 missing project-trust confirmation before building a Dev Container allowed host-level code execution

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Jetbrains Intellij Idea

Weakness classification (CWE)

CWE-829 — Inclusion of Functionality from Untrusted Control Sphere

References

cve@jetbrains.com

Frequently asked questions

What is CVE-2026-86504?: CVE-2026-86504 is a high-severity vulnerability in Jetbrains Intellij Idea, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 7.8/10. Published 2026-09-07.
How severe is CVE-2026-86504?: High severity. CVSS v3 base score is 7.8 out of 10.