What is CVE-2026-49366?

CVE-2026-49366 is a high-severity vulnerability in Jetbrains Intellij Idea, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-05-29.

How severe is CVE-2026-49366?

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

RCE in Jetbrains Intellij Idea

CVE-2026-49366

In JetBrains IntelliJ IDEA before 2026.1.1 command injection was possible via filename completion

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-05-29 · last modified 2026-07-22.

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.

EPSS exploit prediction

EPSS: 0.007 (51.4th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002

Affected products

Jetbrains Intellij Idea — versions 0
Jetbrains Intellij Idea

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.jetbrains.com/privacy-security/issues-fixed/ (Vendor Advisory)

Frequently asked questions

What is CVE-2026-49366?: CVE-2026-49366 is a high-severity vulnerability in Jetbrains Intellij Idea, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-05-29.
How severe is CVE-2026-49366?: High severity. CVSS v3 base score is 7.8 out of 10.