CVE-2026-49144

BrowserStack Runner 0.9.5 Path Traversal via _default HTTP Handler

Published Jun 2, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8rpw-6cqh-2v9h browserstack-runner has an unauthenticated arbitrary file read via path traversal in HTTP server
History
Type Values Removed Values Added
First Time appeared Browserstack browserstack-local
CPEs cpe:2.3:a:browserstack:browserstack-local:*:*:*:*:*:node.js:*:*
Vendors & Products Browserstack browserstack-local
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Browserstack
Browserstack browserstack-runner
Vendors & Products Browserstack
Browserstack browserstack-runner
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 8, 2026, 2:04 PM
Reserved
May 27, 2026, 5:40 PM
Status
Deferred
Published
Jun 2, 2026, 9:16 PM
Modified
Oct 8, 2026, 4:17 PM