www/nginx: Update to 1.28.3HEADmain

Changes with nginx 1.28.3                                        24 Mar
2026

    *) Security: a buffer overflow might occur while handling a COPY or
MOVE
       request in a location with "alias", allowing an attacker to
modify
       the source or destination path outside of the document root
       (CVE-2026-27654).
       Thanks to Calif.io in collaboration with Claude and Anthropic
       Research.

    *) Security: processing of a specially crafted mp4 file by the
       ngx_http_mp4_module on 32-bit platforms might cause a worker
process
       crash, or might have potential other impact (CVE-2026-27784).
       Thanks to Prabhav Srinath (sprabhav7).

    *) Security: processing of a specially crafted mp4 file by the
       ngx_http_mp4_module might cause a worker process crash, or might
have
       potential other impact (CVE-2026-32647).
       Thanks to Xint Code and Pavel Kohout (Aisle Research).

    *) Security: a segmentation fault might occur in a worker process if
the
       CRAM-MD5 or APOP authentication methods were used and
authentication
       retry was enabled (CVE-2026-27651).
       Thanks to Arkadi Vainbrand.

    *) Security: an attacker might use PTR DNS records to inject data in
       auth_http requests, as well as in the XCLIENT command in the
backend
       SMTP connection (CVE-2026-28753).
       Thanks to Asim Viladi Oglu Manizada, Colin Warren, Xiao Liu
(Yunnan
       University), Yuan Tan (UC Riverside), and Bird Liu (Lanzhou
       University).

    *) Security: SSL handshake might succeed despite OCSP rejecting a
client
       certificate in the stream module (CVE-2026-28755).
       Thanks to Mufeed VH of Winfunc Research.

    *) Change: now nginx limits the size and rate of QUIC stateless
reset
       packets.

    *) Bugfix: receiving a QUIC packet by a wrong worker process could
cause
       the connection to terminate.

    *) Bugfix: in the ngx_http_mp4_module.
       Thanks to Andrew Lacambra.

Sponsored by:	Netzkommune GmbH

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