Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Shopify | Tophat | < 2.5.1 |
Related Weaknesses (CWE)
References
- https://github.com/Shopify/tophat/pull/139Issue Tracking
- https://github.com/Shopify/tophat/security/advisories/GHSA-8x8g-6rv5-mgg2Vendor Advisory
FAQ
What is CVE-2026-39862?
CVE-2026-39862 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 u...
How severe is CVE-2026-39862?
CVE-2026-39862 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-39862?
Check the references section above for vendor advisories and patch information. Affected products include: Shopify Tophat.