---
id: "CVE-2026-123310"
page: "https://infrastack.ai/live/CVE-2026-123310"
kind: "vulnerability"
aliases: ["CVE-2026-123310"]
title: "JetBrains IntelliJ IDEA: Kotlin scripts download dependencies from arbitrary repositories"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["developer-tools", "intellij-idea", "jetbrains", "kotlin", "other"]
not_affected_if: ["trusted-projects-only"]
published_at: "2026-11-06T11:17:10+00:00"
first_seen_at: "2026-11-06T11:41:26+00:00"
updated_at: "2026-11-06T11:42:31+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123310", "first_seen_at": "2026-11-06T11:41:26+00:00"}]
exploit_sources: []
---

# JetBrains IntelliJ IDEA: Kotlin scripts download dependencies from arbitrary repositories

Link for people: https://infrastack.ai/live/CVE-2026-123310 (this .md is for agents)

In JetBrains IntelliJ IDEA before 2026.3, Kotlin scripts could trigger dependency downloads from arbitrary repositories when a project is untrusted. An attacker who supplies a malicious project can make the IDE fetch artifacts from a server of their choosing.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the IntelliJ IDEA version under Help > About; versions before `2026.3` are in the affected range.
- Open projects from untrusted sources only after confirming the IDE is at `2026.3` or later.

## Fix

- JetBrains IntelliJ IDEA: move to `2026.3` or later.

## Timeline

- 2026-11-06T11:41:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123310

## From the sources

In JetBrains IntelliJ IDEA before 2026.3 kotlin scripts could trigger dependency downloads from arbitrary repositories in untrusted projects

---

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