Security Bulletin: IBM Informix Wire Listener is affected by a vulnerability in the third-party Netty library (CVE-2026-59900).

Summary IBM Informix Wire Listener is affected by CVE-2026-59900. To address this issue, Netty has been updated to the latest version in IBM Informix versions 14.10.xC14 and 15.0.1.14. Vulnerability Details CVEID:CVE-2026-59900 DESCRIPTION: Netty is an asynchronous, event-driven network applicati...

CVE-2026-71554

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the resulting request...

CVE-2026-59900

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client...

CVE-2026-59900 Netty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client...

EUVD-2026-50442

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter fails to deduplicate or validate Host headers when an HTTP/2 client...

CVE-2026-59900

Netty CVE-2026-59900 affects the HTTP/2→HTTP/1.x translation in Netty’s HTTP/2-to-HTTP/1.x codec (Http2StreamFrameToHttpObjectCodec and InboundHttp2ToHttpAdapter). When an HTTP/2 client sends both the :authority pseudo-header and a literal Host header in the same HEADERS frame, the translator may...

OESA-2026-1410 libsoup security update

libsoup is an HTTP client/server library for GNOME. It uses GObjects and the glib main loop, to integrate well with GNOME applications, and also has a synchronous API, for use in threaded applications. Security Fixes: A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a...

Security update for libsoup2

This update for libsoup2 fixes the following issues: CVE-2025-14523: Reject duplicated Host in headers and followed upstream update bsc1254876. CVE-2026-0719: Fixed overflow for password md4sum bsc1256399 Patch Instructions: To install this SUSE update use the SUSE recommended installation method...

SUSE-SU-2026:0253-1 Security update for libsoup2

This update for libsoup2 fixes the following issues: - CVE-2025-14523: Reject duplicated Host in headers and followed upstream update bsc1254876. - CVE-2026-0719: Fixed overflow for password md4sum bsc1256399...

MiracleLinux 8 : libsoup-2.62.3-11.el8_10 (AXSA:2026-026:01)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-026:01 advisory. libsoup: libsoup: Duplicate Host Header Handling Causes Host-Parsing Discrepancy First- vs Last-Value Wins CVE-2025-14523 Tenable has extracted the preceding...