---
id: CVE-2026-89039
title: >-
  A caller who can invoke the convert_playwright_script prompt in mcp-k6 can
  pass a bare file path as the playwright_script argument and receive the
  contents of any file readable by the user running the server, including SSH
  keys and cloud…
summary: >-
  A caller who can invoke the convert_playwright_script prompt in mcp-k6 can
  pass a bare file path as the playwright_script argument and receive the
  contents of any file readable by the user running the server, including SSH
  keys and cloud…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-22
  - CWE-424
vendor: Grafana
product: mcp-k6
affected:
  - mcp-k6 >= 0.3.0 < 0.7.0
published: '2026-10-05'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T16:08:43.180'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89039'
references:
  - url: 'https://grafana.com/security/security-advisories/cve-2026-89039'
    label: security@grafana.com
tags:
  - nvd
  - cve.org
epss: 0.00379
epssPercentile: 0.31711
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-05T15:14:33.272676Z'
ingestedAt: '2026-10-05T15:23:17.079Z'
---

## Overview

A caller who can invoke the convert_playwright_script prompt in mcp-k6 can pass a bare file path as the playwright_script argument and receive the contents of any file readable by the user running the server, including SSH keys and cloud credentials in that user's home directory (path traversal). The working-directory restriction applied to '@'-prefixed paths can also be bypassed with a symbolic link inside the working directory that points outside it.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.