# CVE-2026-49366: Command injection in IntelliJ IDEA

> Attackers can execute arbitrary commands via filename completion in IntelliJ IDEA, requiring an upgrade to the latest version.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **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 available:** No
- **Published:** 29 May 2026
- **Updated:** 30 May 2026
- **Also known as:** GHSA-rc87-jvvm-wgq4

## What is CVE-2026-49366?

CVE-2026-49366 is a high-severity command injection vulnerability in Jetbrains Intellij Idea, published on 29 May 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 2026.1.1 command injection was possible via filename completion

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-49366?

It affects 1 product.


Products: Jetbrains Intellij Idea.

## How do I fix CVE-2026-49366?

No fix has been published for CVE-2026-49366 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-49366 being exploited?

There is no known exploitation of CVE-2026-49366 in the wild and no public exploit code.

## Other vulnerabilities in Jetbrains Intellij Idea

- [CVE-2026-64812](https://insights.sbomify.com/CVE-2026-64812/): Missing authorization in IntelliJ IDEA (critical 10.0)
- [CVE-2026-64813](https://insights.sbomify.com/CVE-2026-64813/): Missing authorization in IntelliJ IDEA (critical 10.0)
- [CVE-2020-11690](https://insights.sbomify.com/CVE-2020-11690/): Server-side request forgery in n/a (critical 9.8)
- [CVE-2019-10104](https://insights.sbomify.com/CVE-2019-10104/): Misconfiguration in n/a (critical 9.8)
- [CVE-2019-9186](https://insights.sbomify.com/CVE-2019-9186/): Misconfiguration in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-49366 and fix it if it is affected.

What it is: CVE-2026-49366 is a high-severity command injection vulnerability in Jetbrains Intellij Idea, published on 29 May 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.
Exploitation: There is no known exploitation of CVE-2026-49366 in the wild and no public exploit code.

Affected product: Jetbrains Intellij Idea. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-49366/ (Markdown: https://insights.sbomify.com/CVE-2026-49366/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-49366
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-49366
- OSV: https://osv.dev/vulnerability/CVE-2026-49366

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-49366/
Summaries are generated and may contain mistakes; the official description above is the record.