CVE-2026-33989
Received Received - Intake
Path Traversal in Mobile Next MCP Server Allows Arbitrary File Write

Publication date: 2026-03-27

Last updated on: 2026-03-31

Assigner: GitHub, Inc.

Description
Mobile Next is an MCP server for mobile development and automation. Prior to version 0.0.49, the `@mobilenext/mobile-mcp` server contains a Path Traversal vulnerability in the `mobile_save_screenshot` and `mobile_start_screen_recording` tools. The `saveTo` and `output` parameters were passed directly to filesystem operations without validation, allowing an attacker to write files outside the intended workspace. Version 0.0.49 fixes the issue.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-03-27
Last Modified
2026-03-31
Generated
2026-06-16
AI Q&A
2026-03-28
EPSS Evaluated
2026-06-15
NVD
CVE-2026-33989
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mobilenexthq mobile_mcp to 0.0.49 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-73 The product allows user input to control or influence paths or file names that are used in filesystem operations.
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

The vulnerability exists in the Mobile Next MCP server prior to version 0.0.49. It is a Path Traversal vulnerability found in the tools mobile_save_screenshot and mobile_start_screen_recording. Specifically, the parameters 'saveTo' and 'output' are used directly in filesystem operations without proper validation. This allows an attacker to write files outside the intended workspace, potentially overwriting or creating files in unauthorized locations.

Impact Analysis

This vulnerability can allow an attacker to write arbitrary files outside the intended workspace on the server. This can lead to unauthorized modification or creation of files, which may result in disruption of service, data corruption, or further exploitation of the system. The CVSS score of 8.1 indicates a high severity with impacts on integrity and availability.

Mitigation Strategies

To mitigate this vulnerability, upgrade the @mobilenext/mobile-mcp server to version 0.0.49 or later, as this version fixes the Path Traversal issue.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-33989. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart