CVE-2026-89039 (GCVE-0-2026-89039)

Vulnerability from cvelistv5 – Published: 2026-10-05 14:52 – Updated: 2026-10-05 19:36
VLAI
Title
Arbitrary file read via the convert_playwright_script prompt in mcp-k6
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 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.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 15:14 UTC
CWE
Assigner
GRAFANA CNA under the mitre root
CNA scorecard C 70/100 over 48 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Grafana mcp-k6 Affected: 0.3.0 , < 0.7.0 (semver)
guessed Create a notification for this product.
Date Public
2026-10-05 14:40
Credits
bebold6133 (Researcher)
Show details on NVD website
To clipboard 

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