What is CVE-2026-86502?

CVE-2026-86502 is a high-severity vulnerability in Jetbrains Intellij Idea, classified under Missing Authentication for Critical Function. CVSS score: 8.4/10. Published 2026-09-07.

How severe is CVE-2026-86502?

High severity. CVSS v3 base score is 8.4 out of 10.

Auth bypass in Jetbrains Intellij Idea

CVE-2026-86502

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

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Jetbrains Intellij Idea

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

cve@jetbrains.com

Frequently asked questions

What is CVE-2026-86502?: CVE-2026-86502 is a high-severity vulnerability in Jetbrains Intellij Idea, classified under Missing Authentication for Critical Function. CVSS score: 8.4/10. Published 2026-09-07.
How severe is CVE-2026-86502?: High severity. CVSS v3 base score is 8.4 out of 10.