Buffer overflow in ngx_http_dav_module (CVE-2026-27654) Buffer overflow in the ngx_http_mp4_module (CVE-2026-27784) Buffer overflow in the ngx_http_mp4_module (CVE-2026-32647) NULL pointer dereference while using CRAM-MD5 or APOP (CVE-2026-27651) Injection in auth_http and XCLIENT (CVE-2026-28753) OCSP result bypass in stream (CVE-2026-28755)