Home

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.

PUBLISHED Reserved 2026-05-27 | Published 2026-06-02 | Updated 2026-06-03 | Assigner VulnCheck




HIGH: 7.1CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

MEDIUM: 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Default status
affected

Any version
affected

Credits

Christ Bouchuen finder

References

github.com/...runner/security/advisories/GHSA-8rpw-6cqh-2v9h exploit

github.com/...runner/security/advisories/GHSA-8rpw-6cqh-2v9h vendor-advisory

www.vulncheck.com/...path-traversal-via-default-http-handler third-party-advisory

cve.org (CVE-2026-49144)

nvd.nist.gov (CVE-2026-49144)

Download JSON