Barcode is a GLPI plugin for printing barcodes and QR codes. GLPI instances version 2.x prior to version 2.6.1 with the barcode plugin installed are vulnerable to a path traversal vulnerability. This issue was patched in version 2.6.1. As a workaround, delete the `front/send.php` file.
https://github.com/pluginsGLPI/barcode/security/advisories/GHSA-2pjh-h828-wcw9
https://github.com/pluginsGLPI/barcode/releases/tag/2.6.1
https://github.com/pluginsGLPI/barcode/commit/428c3d9adfb446e8492b1c2b7affb3d34072ff46