CVE-2026-39862

HIGH

Tophat has a Command Injection Vulnerability When Accessing a Maliciously Crafted Tophat Link

Title source: cna

Description

Tophat is a mobile applications testing harness. Prior to 2.5.1, Tophat is affected by remote code execution via crafted tophat:// or http://localhost:29070 URLs. The arguments query parameter flows unsanitized from URL parsing through to /bin/bash -c execution, allowing an attacker to execute arbitrary commands on a developer's macOS workstation. Any developer with Tophat installed is vulnerable. For previously trusted build hosts, no confirmation dialog appears. Attacker commands run with the user's permissions. This vulnerability is fixed in 2.5.1.

References (2)

[X_Refsource_Confirm] https://github.com/Shopify/tophat/security/advisories/GHSA-8x8g-6rv5-mgg2

[X_Refsource_Misc] https://github.com/Shopify/tophat/pull/139

Scores

CVSS v3 8.8

EPSS 0.0030

EPSS Percentile 53.4%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-78

Status published

Products (2)

shopify/tophat < 2.5.1

Shopify/tophat < 2.5.1

Published Apr 08, 2026

Tracked Since Apr 09, 2026