CVE-2026-39862 Tophat has a Command Injection Vulnerability When Accessing a Maliciously Crafted Tophat Link
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-39862?
CVE-2026-39862 is a medium-severity vulnerability in Shopify tophat, published on 8 Apr 2026.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-39862?
It affects 1 product.
Products include Shopify Tophat.
How do I fix CVE-2026-39862?
No fix has been published for CVE-2026-39862 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-39862 being exploited?
There is no known exploitation of CVE-2026-39862 in the wild and no public exploit code.
Sources
Also known as GHSA-8x8g-6rv5-mgg2.