browserstack browserstack-runner up to 0.9.5 HTTP lib/server.js path traversal

Summaryinfo

A vulnerability, which was classified as critical, was found in browserstack browserstack-runner up to 0.9.5. The impacted element is an unknown function in the library lib/server.js of the component HTTP Handler. The manipulation results in path traversal. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is cataloged as CVE-2026-49144. The attack must originate from the local network. There is no exploit available.

Detailsinfo

A vulnerability was found in browserstack browserstack-runner up to 0.9.5. It has been classified as critical. Affected is some unknown functionality in the library lib/server.js of the component HTTP Handler. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. CVE summarizes:

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.

The weakness was shared by Christ Bouchuen as GHSA-8rpw-6cqh-2v9h. The advisory is available at github.com. This vulnerability is traded as CVE-2026-49144 since 05/27/2026. The exploitability is told to be easy. The attack can only be initiated within the local network. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/03/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• browserstack

Name

• browserstack-runner

Version

• 0.9.0
• 0.9.1
• 0.9.2
• 0.9.3
• 0.9.4
• 0.9.5

Support

• end of life

Website

• Product: https://github.com/browserstack/browserstack-runner/

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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