Answer in brief
CVE-2026-89039 records a Medium severity (CVSS 6.5) vulnerability in CVE-2026-89039 CVE Record. The current sources do not mark it as known exploited. The current feed maps Grafana/Mcp K6 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Grafana/Mcp K6 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Grafana/Mcp K6generic | 0.3.0 | Not reported |
Published upstream
Oct 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 5, 2026
The convert_playwright_script prompt in the k6 MCP server accepts a file path as its playwright_script argument. Paths given in the documented '@'-prefixed form are restricted to the server's current working directory, but a bare path is resolved by a separate undocumented code path that applies no such restriction. A caller able to invoke the prompt can therefore read any file readable by the user running the server, including files outside the working directory, and receives the file contents in the prompt response. A leading '~' is expanded to the user's home directory, so credential files such as SSH private keys are directly addressable. The working-directory restriction is additionally bypassable through a symbolic link inside the working directory that points outside it, because the path is not canonicalized before the restriction is applied. All releases from v0.3.0 onward are affected; releases v0.3.0 and v0.4.0 apply no restriction to either form.
Quoted source text, attributed separately from HOL analysis.