Version 2.10.1 - 2026-06-04 Security: Fixed shell escaping when opening an editor (#12903) Security: Verify backup phar signature before restoring it when using self- update --rollback (#12918) Fixed source-fallback also disabling fallbacks to dist install when source is

Source: Fedora 44 Composer Critical Shell Escaping Fix Advisory 2026-9b34a78e81