{"id":"CVE-2026-79534","published":"2026-09-29T20:17:26.993","lastModified":"2026-09-29T20:17:26.993","description":"mark3labs mcp-filesystem-server v0.11.1 is vulnerable to Directory Traversal due to an improper link resolution in validatePath (filesystemserver/handler/helper.go). When filepath.EvalSymlinks returns os.IsNotExist for a dangling symlink, the fallback validates only the parent directory and returns the unresolved path, so write_file (and modify_file, copy_file, move_file, create_directory) follows a pre-existing dangling symlink located inside an allowed directory and creates a file outside the configured allowed directories.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://www.traceforce.ai/security-advisories/cve-2026-79534","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}