*) Security: use-after-free might occur when using HTTP/3 and

a specially crafted QUIC session, allowing an attacker to cause
worker process memory corruption or segmentation fault in a

   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

and "large_client_header_buffers" with large configured values

   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

UTF-8 via the "charset_map" directive, allowing an attacker to

a limited disclosure of worker proccess memory or segmentation

   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

empty if all percentages were specified explicitly and summed up

   100%.

*) Bugfix: constant time "secure_link" hash comparison.
   Thanks to kodareef5.