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browserstack-runner vulnerabilities

Vulnerabilities published for browserstack-runner in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 2

  1. CVE-2026-49144

    High · CVSS 7.1EPSS 0.42%No fix published

    BrowserStack Runner 0.9.5 Path Traversal via _default HTTP Handler

    BrowserStack Runner through 0.9.5 contains a path traversal vulnerability in the _default HTTP handler in lib/server.js that allows unauthenticated network-adjacent attackers to read arbitrary files. Attackers can exploit the unauthenticated HTTP server bound on all interfaces to traverse outside the project root and access sensitive files.

    Published Updated
  2. CVE-2026-49143

    High · CVSS 8.7EPSS 0.8%No fix published

    BrowserStack Runner 0.9.5 Unauthenticated RCE via /_log HTTP Handler

    BrowserStack Runner through 0.9.5 contains a remote code execution vulnerability in the /_log HTTP handler that allows unauthenticated network-adjacent attackers to execute arbitrary code by submitting crafted JSON request bodies to the handler, which passes user-supplied data to vm.runInNewContext() combined with eval(). Attackers can escape the Node.js vm sandbox by leveraging a host-context Function reference through util.format to access the host process via this.constructor.constructor, achieving full remote code execution on the underlying system without any authentication.

    Published Updated

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