What’s Vulnerable › Vulnerabilities

CVE-2026-33989: @mobilenext/mobile-mcp alllows arbitrary file write via Path Traversal in mobile screen capture tools

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-27 · updated 2026-10-26
• Weakness: CWE-22

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.

Affected products

• mobile-next mobile-mcp: before 0.0.49 — fixed in 0.0.49

How to fix

Upgrade to a fixed version: mobile-next mobile-mcp 0.0.49. Check the vendor advisory for mitigations.

References

• https://github.com/mobile-next/mobile-mcp/commit/f5e32295903128c1e71cf915ae6c0b76c7b0153b
• https://github.com/mobile-next/mobile-mcp/releases/tag/0.0.49
• https://github.com/mobile-next/mobile-mcp/security/advisories/GHSA-3p2m-h2v6-g9mx

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