CVE-2026-86439 — knowns before 0.30.0 Path Traversal via MCP doc and memory tools
knowns versions before 0.30.0 fail to validate filesystem paths in MCP tool arguments, allowing attackers to read, create, overwrite and delete files outside the project directo…
Published: 2026-09-07 · CVSS: 8.7 · CVSS 4.0
knowns versions before 0.30.0 fail to validate filesystem paths in MCP tool arguments, allowing attackers to read, create, overwrite and delete files outside the project directory. Attackers can supply path arguments containing directory traversal sequences to access arbitrary Markdown files accessible to the server process.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7