CVE-2026-75596

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default io.netty.handler.ssl.SniHandler constructors use the pre-handshake ClientHello aggregation path in handler/src/main/java/io/netty/handler/ssl/SslClientHelloHandler.java at...

CVE-2026-75596

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default io.netty.handler.ssl.SniHandler constructors use the pre-handshake ClientHello aggregation path in handler/src/main/java/io/netty/handler/ssl/SslClientHelloHandler.java at...

CVE-2026-75596 Netty: Fragmented ClientHello records trigger quadratic pre-handshake reassembly in default SNI parsing

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default io.netty.handler.ssl.SniHandler constructors use the pre-handshake ClientHello aggregation path in handler/src/main/java/io/netty/handler/ssl/SslClientHelloHandler.java at...

CVE-2026-75596

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default io.netty.handler.ssl.SniHandler constructors use the pre-handshake ClientHello aggregation path in handler/src/main/java/io/netty/handler/ssl/SslClientHelloHandler.java at...

CVE-2026-72398

A flaw was found in the Stream Control Transmission Protocol SCTP implementation within the Linux kernel. When cookie authentication is disabled, a remote attacker can tamper with the INIT chunk data during the SCTP handshake. This occurs because the reconstructed INIT chunk from the COOKIE-ECHO...

CVE-2026-74270

A flaw was found in the Linux kernel's handshake mechanism. An unprivileged local attacker can exploit a missing permission check in the 'DONE' command of the handshake general Netlink genl family. By guessing or observing a valid socket identifier, the attacker can either force the kernel to...

BIT-GOLANG-2026-56862 Limit handshake messages we are willing to accept post-handshake in crypto/tls

Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key derivation operations indefinitely...

CVE-2026-73500

A flaw was found in etcd, a distributed key-value store. A remote attacker can exploit this by opening numerous TCP connections to an etcd TLS listener without completing the TLS handshake. This action causes the tlsListener.acceptLoop to spawn an unbounded number of goroutines, which consume...

PT-2026-78718

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.137.Final Netty versions prior to 4.2.17.Final Description An unauthenticated remote peer can cause quadratic CPU work on the event loop by advertising a large ClientHello and delivering its body in thousands of tin...

EUVD-2026-61172

ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated IPv4 peer can deterministically terminate a synced Zebra node using the default Linux dual-stack listener configuration. The handshake path canonicalized an IPv4-mapped IPv6 PeerSocketAddr such as ::ffff:127.0.0.1 ...

CVE-2026-52829 ZEBRA: IPv4-Mapped Mempool Misbehavior Update Aborts Zebra Address Book

ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated IPv4 peer can deterministically terminate a synced Zebra node using the default Linux dual-stack listener configuration. The handshake path canonicalized an IPv4-mapped IPv6 PeerSocketAddr such as ::ffff:127.0.0.1 ...

CVE-2026-52829 ZEBRA: IPv4-Mapped Mempool Misbehavior Update Aborts Zebra Address Book

ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated IPv4 peer can deterministically terminate a synced Zebra node using the default Linux dual-stack listener configuration. The handshake path canonicalized an IPv4-mapped IPv6 PeerSocketAddr such as ::ffff:127.0.0.1 ...

GO-2026-6107 Unbounded TLS handshake goroutines in go.etcd.io/etcd/client/pkg/v3

In go.etcd.io/etcd/client/pkg/v3 before 3.5.33, 3.6.14, and 3.7.1, TLS handshakes on listeners created by NewTLSListener do not enforce a handshake deadline. An unauthenticated network attacker who connects to an etcd TLS listener without sending a ClientHello causes a goroutine and a tracking ma...

CVE-2026-72222

A flaw was found in the Linux kernel's sunrpc component, which affects TLS-enabled Network File System NFS servers. A race condition exists during the asynchronous TLS handshake process. A remote attacker could exploit this by closing a connection at a specific time, leading to memory corruption...

CVE-2026-72221

A flaw was found in the kernel. A race condition exists in the sunrpc component during the Transport Layer Security TLS handshake cancellation process. This can lead to the corruption of an internal data structure, potentially causing system instability or a denial of service. Additionally, it ma...

GO-2026-6156 Wings: Maliciously crafted packet during SFTP connection handshake causes denial of service in github.com/pterodactyl/wings

Wings: Maliciously crafted packet during SFTP connection handshake causes denial of service in github.com/pterodactyl/wings...

BIT-ETCD-2026-73500 etcd: `tlsListener.acceptLoop` spawns unbounded handshake goroutines with no deadline

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a network attacker who can reach an etcd TLS listener can open many TCP connections and never send a ClientHello. In client/pkg/transport/listenertls.go, each connection handle...

Security update for go1.26

This update for go1.26 fixes the following issues: Security issues fixed: CVE-2026-33818: encoding/asn1: enforce maximum recursion depth bsc1275034. CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation...

SUSE CVE-2026-70464

rsync daemon 2.0.0 before 3.5.0 contains a denial of service vulnerability that allows unauthenticated remote attackers to exhaust daemon connection slots by stalling the handshake process before or after module selection without triggering the I/O timeout. Attackers can open many simultaneous...

PT-2026-80353

In go.etcd.io/etcd/client/pkg/v3 before 3.5.33, 3.6.14, and 3.7.1, TLS handshakes on listeners created by NewTLSListener do not enforce a handshake deadline. An unauthenticated network attacker who connects to an etcd TLS listener without sending a ClientHello causes a goroutine and a tracking ma...