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.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
browserstack browserstack-runner affected
Version Status Constraints
0 affected ≤ 0.9.5

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/browserstack/browserstack-runner/security/advisories/GHSA-8rpw-6cqh-2v9h cve-icon cve-icon
https://www.vulncheck.com/advisories/browserstack-runner-path-traversal-via-default-http-handler cve-icon cve-icon
History

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Description 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.
Title BrowserStack Runner 0.9.5 Path Traversal via _default HTTP Handler
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-02T20:34:54.748Z

Reserved: 2026-05-27T17:40:12.739Z

Link: CVE-2026-49144

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-02T21:16:28.230

Modified: 2026-06-02T21:16:28.230

Link: CVE-2026-49144

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses