nginx

Changes with nginx 1.29.1 13 Aug 2025
*) Security: processing of a specially crafted login/password when using
the "none" authentication method in the ngx_mail_smtp_module might
cause worker process memory disclosure to the authentication server
(CVE-2025-53859).
*) Change: now TLSv1.3 certificate compression is disabled by default.
*) Feature: the "ssl_certificate_compression" directive.
*) Feature: support for 0-RTT in QUIC when using OpenSSL 3.5.1 or newer.
*) Bugfix: the 103 response might be buffered when using HTTP/2 and the
"early_hints" directive.
*) Bugfix: in handling "Host" and ":authority" header lines with equal
values when using HTTP/2; the bug had appeared in 1.17.9.
*) Bugfix: in handling "Host" header lines with a port when using
HTTP/3.
*) Bugfix: nginx could not be built on NetBSD 10.0.
*) Bugfix: in the "none" parameter of the "smtp_auth" directive.

Changes with nginx 1.29.0 24 Jun 2025
*) Feature: support for response code 103 from proxy and gRPC backends;
the "early_hints" directive.
*) Feature: loading of secret keys from hardware tokens with OpenSSL
provider.
*) Feature: support for the "so_keepalive" parameter of the "listen"
directive on macOS.
*) Change: the logging level of SSL errors in a QUIC handshake has been
changed from "error" to "crit" for critical errors, and to "info" for
the rest; the logging level of unsupported QUIC transport parameters
has been lowered from "info" to "debug".
*) Change: the native nginx/Windows binary release is now built using
Windows SDK 10.
*) Bugfix: nginx could not be built by gcc 15 if ngx_http_v2_module or
ngx_http_v3_module modules were used.
*) Bugfix: nginx might not be built by gcc 14 or newer with -O3 -flto
optimization if ngx_http_v3_module was used.
*) Bugfixes and improvements in HTTP/3.

Changes with nginx 1.27.5 16 Apr 2025
*) Feature: CUBIC congestion control in QUIC connections.
*) Change: the maximum size limit for SSL sessions cached in shared
memory has been raised to 8192.
*) Bugfix: in the "grpc_ssl_password_file", "proxy_ssl_password_file",
and "uwsgi_ssl_password_file" directives when loading SSL
certificates and encrypted keys from variables; the bug had appeared
in 1.23.1.
*) Bugfix: in the $ssl_curve and $ssl_curves variables when using
pluggable curves in OpenSSL.
*) Bugfix: nginx could not be built with musl libc.
Thanks to Piotr Sikora.
*) Performance improvements and bugfixes in HTTP/3.

Changes with nginx 1.27.4 05 Feb 2025
*) Security: insufficient check in virtual servers handling with TLSv1.3
SNI allowed to reuse SSL sessions in a different virtual server, to
bypass client SSL certificates verification (CVE-2025-23419).
*) Feature: the "ssl_object_cache_inheritable", "ssl_certificate_cache",
"proxy_ssl_certificate_cache", "grpc_ssl_certificate_cache", and
"uwsgi_ssl_certificate_cache" directives.
*) Feature: the "keepalive_min_timeout" directive.
*) Workaround: "gzip filter failed to use preallocated memory" alerts
appeared in logs when using zlib-ng.
*) Bugfix: nginx could not build libatomic library using the library
sources if the --with-libatomic=DIR option was used.
*) Bugfix: QUIC connection might not be established when using 0-RTT;
the bug had appeared in 1.27.1.
*) Bugfix: nginx now ignores QUIC version negotiation packets from
clients.
*) Bugfix: nginx could not be built on Solaris 10 and earlier with the
ngx_http_v3_module.
*) Bugfixes in HTTP/3.

Changes with nginx 1.27.3 26 Nov 2024
*) Feature: the "server" directive in the "upstream" block supports the
"resolve" parameter.
*) Feature: the "resolver" and "resolver_timeout" directives in the
"upstream" block.
*) Feature: SmarterMail specific mode support for IMAP LOGIN with
untagged CAPABILITY response in the mail proxy module.
*) Change: now TLSv1 and TLSv1.1 protocols are disabled by default.
*) Change: an IPv6 address in square brackets and no port can be
specified in the "proxy_bind", "fastcgi_bind", "grpc_bind",
"memcached_bind", "scgi_bind", and "uwsgi_bind" directives, and as
client address in ngx_http_realip_module.
*) Bugfix: in the ngx_http_mp4_module.
Thanks to Nils Bars.
*) Bugfix: the "so_keepalive" parameter of the "listen" directive might
be handled incorrectly on DragonFly BSD.
*) Bugfix: in the "proxy_store" directive.

Changes with nginx 1.27.2 02 Oct 2024
*) Feature: SSL certificates, secret keys, and CRLs are now cached on
start or during reconfiguration.
*) Feature: client certificate validation with OCSP in the stream
module.
*) Feature: OCSP stapling support in the stream module.
*) Feature: the "proxy_pass_trailers" directive in the
ngx_http_proxy_module.
*) Feature: the "ssl_client_certificate" directive now supports
certificates with auxiliary information.
*) Change: now the "ssl_client_certificate" directive is not required
for client SSL certificates verification.

Changes with nginx 1.27.1 14 Aug 2024
*) Security: processing of a specially crafted mp4 file by the
ngx_http_mp4_module might cause a worker process crash
(CVE-2024-7347).
Thanks to Nils Bars.
*) Change: now the stream module handler is not mandatory.
*) Bugfix: new HTTP/2 connections might ignore graceful shutdown of old
worker processes.
Thanks to Kasei Wang.
*) Bugfixes in HTTP/3.
*) Bugfix: nginx could not be built by gcc 14 if the --with-libatomic

Changes with nginx 1.27.0 29 May 2024
*) Security: when using HTTP/3, processing of a specially crafted QUIC
session might cause a worker process crash, worker process memory
disclosure on systems with MTU larger than 4096 bytes, or might have
potential other impact (CVE-2024-32760, CVE-2024-31079,
CVE-2024-35200, CVE-2024-34161).
Thanks to Nils Bars of CISPA.
*) Feature: variables support in the "proxy_limit_rate",
"fastcgi_limit_rate", "scgi_limit_rate", and "uwsgi_limit_rate"
directives.
*) Bugfix: reduced memory consumption for long-lived requests if "gzip",
"gunzip", "ssi", "sub_filter", or "grpc_pass" directives are used.
*) Bugfix: nginx could not be built by gcc 14 if the --with-atomic
option was used.
Thanks to Edgar Bonet.
*) Bugfixes in HTTP/3.

Changes with nginx 1.25.5 16 Apr 2024
*) Feature: virtual servers in the stream module.
*) Feature: the ngx_stream_pass_module.
*) Feature: the "deferred", "accept_filter", and "setfib" parameters of
the "listen" directive in the stream module.
*) Feature: cache line size detection for some architectures.
Thanks to Piotr Sikora.
*) Feature: support for Homebrew on Apple Silicon.
Thanks to Piotr Sikora.
*) Bugfix: Windows cross-compilation bugfixes and improvements.
Thanks to Piotr Sikora.
*) Bugfix: unexpected connection closure while using 0-RTT in QUIC.
Thanks to Vladimir Khomutov.

Changes with nginx 1.25.4 14 Feb 2024
*) Security: when using HTTP/3 a segmentation fault might occur in a
worker process while processing a specially crafted QUIC session
(CVE-2024-24989, CVE-2024-24990).
*) Bugfix: connections with pending AIO operations might be closed
prematurely during graceful shutdown of old worker processes.
*) Bugfix: socket leak alerts no longer logged when fast shutdown was
requested after graceful shutdown of old worker processes.
*) Bugfix: a socket descriptor error, a socket leak, or a segmentation
fault in a worker process (for SSL proxying) might occur if AIO was
used in a subrequest.
*) Bugfix: a segmentation fault might occur in a worker process if SSL
proxying was used along with the "image_filter" directive and errors
with code 415 were redirected with the "error_page" directive.
*) Bugfixes and improvements in HTTP/3.

Changes with nginx 1.25.3 24 Oct 2023
*) Change: improved detection of misbehaving clients when using HTTP/2.
*) Feature: startup speedup when using a large number of locations.
Thanks to Yusuke Nojima.
*) Bugfix: a segmentation fault might occur in a worker process when
using HTTP/2 without SSL; the bug had appeared in 1.25.1.
*) Bugfix: the "Status" backend response header line with an empty
reason phrase was handled incorrectly.
*) Bugfix: memory leak during reconfiguration when using the PCRE2
library.
Thanks to ZhenZhong Wu.
*) Bugfixes and improvements in HTTP/3.