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CVE-2026-39862

8.8 · HIGH

Tophat is a mobile applications testing harness.

Published Apr 8, 2026shopifyCWE-78EPSS 0.56%

Overview

CVE-2026-39862 is a high-severity vulnerability affecting shopify tophat. It was published on April 8, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from shopify. Update tophat to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
shopifytophat>= 0, < 2.5.1Affected

References

GitHubgithub.com/Shopify/tophat/pull/139GitHubgithub.com/Shopify/tophat/security/advisories/GHSA-8x8g-6rv5-mgg2

How CyberStrike helps

Frequently asked questions

What is CVE-2026-39862?

CVE-2026-39862 is a high-severity vulnerability affecting shopify tophat. It was published on April 8, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-39862?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-39862?

Check the references section for vendor advisories and patches from shopify. Update tophat to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-39862?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-39862 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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