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

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Summary

CVECVE-2026-33989
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-27 22:16:22 UTC
Updated2026-03-31 21:52:33 UTC
DescriptionMobile 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS: 0.000330000 probability, percentile 0.094270000 (date 2026-04-01)

Problem Types: CWE-22 | CWE-73 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CWE-73 CWE-73: External Control of File Name or Path

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mobilenexthq Mobile Mcp All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mobile-next Mobile-mcp affected < 0.0.49 Not specified

References

ReferenceSourceLinkTags
github.com/mobile-next/mobile-mcp/releases/tag/0.0.49 [email protected] github.com Release Notes
github.com/mobile-next/mobile-mcp/commit/f5e32295903128c1e71cf915ae6c0b7... [email protected] github.com Patch
github.com/mobile-next/mobile-mcp/security/advisories/GHSA-3p2m-h2v6-g9mx [email protected] github.com Exploit, Vendor Advisory
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