Linux Distros Unpatched Vulnerability : CVE-2026-59248

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Allocation of resources without limits vulnerability in ninenines cowlib allows an unauthenticated remote HTTP/2 or HTTP/3 peer to exhaust memory on the...

Linux Distros Unpatched Vulnerability : CVE-2026-56816

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's Http3FrameCodec buffers incoming data f...

Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types

Summary Netty's Http3FrameCodec buffers incoming data for HTTP/3 reserved frame types up to the specified payload length without any limits. The payload length is read directly from the wire and trusted without validation. A bad actor can send a reserved frame with a payload length of up to...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Http3FrameCodec. An attacker can exhaust system memory by sending multiple QUIC streams with reserved frames specifying excessively large payload lengths. Remediation Upgrade...

openSUSE 16: curl / curl-fish-completion / curl-zsh-completion / libcurl-devel / etc (openSUSE-SU-2026:21272-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21272-1 advisory. This update for curl fixes the following issues - CVE-2026-8286: wrong STARTTLS connection reuse bsc1268402. - CVE-2026-8458: wrong reuse for...

CVE-2026-55213: Memory Allocation with Excessive Size Value

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit edd7a120bfc4af11ac0cbebce2a43cc1f93f9af1, when h2o processes a QPACK instruction sent from the peer over HTTP/3, lib/http3/qpack.c might allocate an on-stack buffer as large as approximately 800 KB by calling...

CVE-2026-9545

The libcurl library is vulnerable to a security flaw where it may leak sensitive information during HTTP/3 transfers. When a client initially connects to a legitimate server and subsequently attempts to connect to the same hostname—which has been replaced by an attacker's imposter machine without...

CVE-2026-9545

In this scenario, libcurl first uses a proper HTTP/3 server for the initial transfers, and when it makes a second transfer to the same site it has been replaced by the attacker's impostor machine - without a valid certificate. When libcurl returns to the hostname the second time with a cached SSL...

CVE-2026-40211

An attacker can send crafted DNS over HTTP/3 queries, triggering an exception that prevents some buffer from being freed right away. The buffer will be freed at the end of the QUIC connection, but on some setups it might be possible to open enough concurrent DoH3 streams to trigger an out-of-memo...

CVE-2026-40211

An attacker can send crafted DNS over HTTP/3 queries, triggering an exception that prevents some buffer from being freed right away. The buffer will be freed at the end of the QUIC connection, but on some setups it might be possible to open enough concurrent DoH3 streams to trigger an out-of-memo...

CVE-2026-42530 NGINX Open-Source ngx_http_v3_module vulnerability

NGINX Open Source has a vulnerability in the ngxhttpv3module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream. This m...

CVE-2026-42530 NGINX Open-Source ngx_http_v3_module vulnerability

NGINX Open Source has a vulnerability in the ngxhttpv3module module. When NGINX Open Source is configured to use the HTTP/3 QUIC module, a remote unauthenticated attacker along with conditions beyond their control can use a specially crafted HTTP/3 session to reopen a QPACK encoder stream. This m...

GHSA-4GRM-H2QV-H6W6 Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion

Summary A memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Details The vulnerability exists in io.netty.handler.codec.http3.QpackDecodershouldWaitForDynamicTableUpdates: If a client sends a header...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in shouldWaitForDynamicTableUpdates in QpackDecoder. An attacker can open an indefinite number of persistently blocked streams by sending headers that reference dynamic table entries...

Linux Distros Unpatched Vulnerability : CVE-2026-44892

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the...

Security update for netty, netty-tcnative

This update for netty, netty-tcnative fixes the following issues CVE-2026-41417: missing validations leads to HTTP request smuggling and RTSP request injection via start-line injection in DefaultHttpRequest.setUri bsc1264350. CVE-2026-42578: HTTP Header Injection via HttpProxyHandler Disabled...

SUSE-SU-2026:2308-1 Security update for netty, netty-tcnative

This update for netty, netty-tcnative fixes the following issues - CVE-2026-41417: missing validations leads to HTTP request smuggling and RTSP request injection via start-line injection in DefaultHttpRequest.setUri bsc1264350. - CVE-2026-42578: HTTP Header Injection via HttpProxyHandler Disabled...

Insecure Default Initialization of Resource

Overview Affected versions of this package are vulnerable to Insecure Default Initialization of Resource due to the lack of an enforced maximum header size limit in the default configuration of the Http3ConnectionHandler. An attacker can exhaust server memory and cause application crashes by...

GHSA-C2RX-5R8W-8XR2 Netty has a Vulnerable Default Configuration Which Leads to Denial of Service via Unbounded HTTP/3 Header Size

Summary The default configuration of the Http3ConnectionHandler in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify HTTP3SETTINGSMAXFIELDSECTIONSIZE, the implementation defaults to an unbounded limit. This insecure default configuration...

curl: CVE-2026-11352: QUIC zero-length UDP datagrams busy-loop

Summary: curl's QUIC UDP receive helper ignores zero-length UDP datagrams before counting them against the per-call packet budget. On Linux, recvmmsgpackets loops while pkts maxpkts, but if!mmsgi.msglen continue; runs before pkts is incremented. The recvmsgpackets backend has the same no-progress...