---
id: "CVE-2026-123858"
page: "https://infrastack.ai/live/CVE-2026-123858"
kind: "vulnerability"
aliases: ["CVE-2026-123858"]
title: "JetBrains PhpStorm: untrusted projects can auto-upload files to deployment servers"
severity: "medium"
cvss: 4.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["deployment", "jetbrains", "package", "php", "phpstorm"]
not_affected_if: ["no-deployment-server", "phpstorm-2026.3-or-later", "trusted-projects-only"]
published_at: "2026-11-06T17:17:25+00:00"
first_seen_at: "2026-11-06T17:43:14+00:00"
updated_at: "2026-11-06T17:45:36+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123858", "first_seen_at": "2026-11-06T17:43:14+00:00"}]
exploit_sources: []
---

# JetBrains PhpStorm: untrusted projects can auto-upload files to deployment servers

Link for people: https://infrastack.ai/live/CVE-2026-123858 (this .md is for agents)

In JetBrains PhpStorm before 2026.3, opening an untrusted project could automatically upload its project files to a configured deployment server. An attacker who supplies a malicious project can cause the IDE to push files to a server the developer has access to.

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

## How to check

- Check the installed PhpStorm version under Help > About and compare it with `2026.3`.
- Review whether any deployment server is configured under Tools > Deployment.

## Fix

- JetBrains PhpStorm: move to `2026.3` or later.

## Timeline

- 2026-11-06T17:43:14+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123858

## From the sources

In JetBrains PhpStorm before 2026.3 project files could be automatically uploaded to a deployment server from untrusted projects

---

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