Linux Mint Xreader PDF Attachment Saving ev-window.c g_file_get_child path traversal

{
                    "vendor": "Linux Mint",
                    "product": "Xreader",
                    "versions": [
                        {
                            "version": "4.6.0",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.1",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.2",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.3",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.4",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.5",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.6",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.7",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.8",
                            "status": "affected"
                        },
                        {
                            "version": "4.6.9",
                            "status": "affected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:o:linux_mint:xreader:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "PDF Attachment Saving Handler"
                    ]
                }