CVE-2026-39862: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Shopify tophat
CVE-2026-39862 is an OS command injection vulnerability in Shopify's Tophat mobile application testing harness versions prior to 2. 5. 1. The vulnerability allows remote code execution via crafted tophat:// or http://localhost:29070 URLs, where the arguments query parameter is unsanitized and passed directly to a bash shell command. This enables an attacker to execute arbitrary commands on a developer's macOS workstation with the user's permissions, without any confirmation dialog for previously trusted build hosts. The issue is fixed in version 2. 5. 1.
AI Analysis
Technical Summary
Shopify Tophat versions before 2.5.1 contain an OS command injection vulnerability (CWE-78) due to improper neutralization of special elements in the arguments query parameter of tophat:// or http://localhost:29070 URLs. The unsanitized input is executed via /bin/bash -c, allowing remote attackers to run arbitrary commands on macOS developer machines running Tophat. The vulnerability affects any developer with Tophat installed and does not prompt for confirmation on trusted build hosts. The vulnerability is addressed in Tophat version 2.5.1.
Potential Impact
An attacker can remotely execute arbitrary commands on a developer's macOS workstation running a vulnerable version of Tophat, with the same permissions as the user. This can lead to compromise of the developer environment and potentially further attacks depending on user privileges. There is no user interaction required and no confirmation dialog for previously trusted hosts, increasing the risk of exploitation. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
This vulnerability is fixed in Tophat version 2.5.1. Users should upgrade to version 2.5.1 or later to remediate this issue. Since this is not a cloud service, remediation requires updating the installed software. Patch status is not explicitly confirmed in the vendor advisory, but the description states the issue is fixed in 2.5.1. No additional mitigations are specified.
CVE-2026-39862: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Shopify tophat
Description
CVE-2026-39862 is an OS command injection vulnerability in Shopify's Tophat mobile application testing harness versions prior to 2. 5. 1. The vulnerability allows remote code execution via crafted tophat:// or http://localhost:29070 URLs, where the arguments query parameter is unsanitized and passed directly to a bash shell command. This enables an attacker to execute arbitrary commands on a developer's macOS workstation with the user's permissions, without any confirmation dialog for previously trusted build hosts. The issue is fixed in version 2. 5. 1.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Shopify Tophat versions before 2.5.1 contain an OS command injection vulnerability (CWE-78) due to improper neutralization of special elements in the arguments query parameter of tophat:// or http://localhost:29070 URLs. The unsanitized input is executed via /bin/bash -c, allowing remote attackers to run arbitrary commands on macOS developer machines running Tophat. The vulnerability affects any developer with Tophat installed and does not prompt for confirmation on trusted build hosts. The vulnerability is addressed in Tophat version 2.5.1.
Potential Impact
An attacker can remotely execute arbitrary commands on a developer's macOS workstation running a vulnerable version of Tophat, with the same permissions as the user. This can lead to compromise of the developer environment and potentially further attacks depending on user privileges. There is no user interaction required and no confirmation dialog for previously trusted hosts, increasing the risk of exploitation. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
This vulnerability is fixed in Tophat version 2.5.1. Users should upgrade to version 2.5.1 or later to remediate this issue. Since this is not a cloud service, remediation requires updating the installed software. Patch status is not explicitly confirmed in the vendor advisory, but the description states the issue is fixed in 2.5.1. No additional mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-07T19:13:20.379Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d6b51c1cc7ad14daaa5cec
Added to database: 4/8/2026, 8:05:48 PM
Last enriched: 4/16/2026, 12:15:15 PM
Last updated: 5/24/2026, 8:08:21 AM
Views: 80
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