CVE-2026-7259

CVE-2026-7259 describes a NULL pointer dereference in PHP due to a mismatch between Oniguruma and mbfl encoding lists, exploitable when user-controlled input influences the encoding passed to mb_regex_encoding(). The issue affects PHP 8.2.x before 8.2.31, 8.3.x before 8.3.31, 8.4.x before 8.4.21,...