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CVE-2026-49144

BrowserStack Runner 0.9.5 Path Traversal via _default HTTP Handler

Published: Jun 2, 2026Updated: Jun 2, 2026 Sources: CVE List NVD
NVD MITRE
6.5CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None

Weaknesses

CWE-22

Affected Products

browserstack-runner
browserstack

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

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

Timeline

Published
Jun 2, 2026
Last Updated
Jun 2, 2026

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