CVE-2026-33989Public exploitNetwork attack vector

Arbitrary file write via unchecked capture paths

Published Mar 27, 2026 · Updated Mar 27, 2026

Path traversal in Mobile Next Mobile MCP before 0.0.49 allows remote attackers to write host files through screen-capture tools. The mobile_save_screenshot and mobile_start_screen_recording handlers pass saveTo and output directly to filesystem writes without restricting resolved paths. Exploitation requires an MCP-connected AI agent to process attacker-controlled content and invoke a tool; writes run with the server process's filesystem permissions.

CVSS severity8.1
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in Mobile Next Mobile MCP before 0.0.49 allows remote attackers to write host files through screen-capture tools. The mobile_save_screenshot and mobile_start_screen_recording handlers pass saveTo and output directly to filesystem writes without restricting resolved paths. Exploitation requires an MCP-connected AI agent to process attacker-controlled content and invoke a tool; writes run with the server process's filesystem permissions.

The record

CVE
CVE-2026-33989
Published
Mar 27, 2026
Updated
Mar 27, 2026
Vendor
Mobile Next
Product
Mobile MCP
Classifications
CWE-73, CWE-22, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.0.49

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mobile Next · Mobile MCPversion=< 0.0.49

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo