*) Security: use-after-free might occur when using HTTP/3 and processing a specially crafted QUIC session, allowing an attacker to cause worker process memory corruption or segmentation fault in a worker process (CVE-2026-42530). Thanks to Trung Nguyen of CyStack. *) Security: a heap memory buffer overflow might occur in a worker process when using a configuration with "ignore_invalid_headers off;" and "large_client_header_buffers" with large configured values when proxying a specially crafted request to HTTP/2 or gRPC backend, allowing an attacker to cause worker process memory corruption or segmentation fault in a worker process (CVE-2026-42055). Thanks to Mufeed VH of Winfunc Research. *) Security: a heap memory buffer overread might occur in a worker process while handling a specially sent response with decoding from UTF-8 via the "charset_map" directive, allowing an attacker to cause a limited disclosure of worker proccess memory or segmentation fault in a worker process (CVE-2026-48142). Thanks to Han Yan of Xiaomi and p4p3r of CYBERONE. *) Change: now the $request_id variable uses SipHash-2-4. *) Feature: the $ssl_sigalgs variable. *) Bugfix: a variable defined by the "split_clients" directive might be empty if all percentages were specified explicitly and summed up to 100%. *) Bugfix: constant time "secure_link" hash comparison. Thanks to kodareef5.