CVE-2026-86504 Code injection in IntelliJ IDEA
Attackers can execute host-level code by bypassing project-trust confirmation during Dev Container builds in IntelliJ IDEA.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-86504?
CVE-2026-86504 is a high-severity code injection vulnerability in JetBrains IntelliJ IDEA, published on 7 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In JetBrains IntelliJ IDEA before 2026.2.2 missing project-trust confirmation before building a Dev Container allowed host-level code execution
Weakness: CWE-829
Which versions are affected by CVE-2026-86504?
How do I fix CVE-2026-86504?
No fix has been published for CVE-2026-86504 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-86504 being exploited?
There is no known exploitation of CVE-2026-86504 in the wild and no public exploit code.
Sources
Also known as GHSA-h5xf-2v4c-pv86.