CVE-2026-49144

HIGH
MEDIUM Priority: 0.03 BB Relevance: 59/100
Published: 2026-06-02 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
AT: None
VC: High
VI: None
VA: None

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.

Affected Software (1)

VendorProductVersion
browserstack browserstack-runner 0

Bug Bounty Relevance

59 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.42%
Raw Score 0.004180
Percentile 36.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00418
2026-11-12
0.00418
2026-11-10
0.00418
2026-11-09
0.00418
2026-11-08
0.00418

Intelligence Sources

mitre ref →