CVE-2026-58250 NATS Server: Pre-auth server crash via double INFO in leafnode handshake

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by...

CVE-2026-58250 NATS Server: Pre-auth server crash via double INFO in leafnode handshake

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by...

CVE-2026-29008 U-Boot 2026.04-rc3 Integer Underflow DoS via tcp_rx_state_machine()

U-Boot through 2026.04-rc3 contains an integer underflow vulnerability in the tcprxstatemachine function net/tcp.c that allows a network-adjacent attacker to crash the bootloader by sending a malformed TCP SYN+ACK packet with a manipulated data offset field causing payloadlen to become negative...

CVE-2026-42505 Invoking Encrypted Client Hello privacy leak in crypto/tls

Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello...

CVE-2026-42505

Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello...

CVE-2026-42505 Invoking Encrypted Client Hello privacy leak in crypto/tls

Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello...

PT-2026-56563

Name of the Vulnerable Software and Affected Versions NATS Server versions prior to 2.12.8 NATS Server versions prior to 2.11.17 Description An unauthenticated peer with network access to a leafnode listener with compression enabled can cause the server to crash. This occurs during the...

Stack-based Buffer Overflow

Overview Affected versions of this package are vulnerable to Stack-based Buffer Overflow in the opensslverifycallback process during a DTLS handshake. An attacker can cause a process crash and disrupt service availability by sending a certificate with an oversized Subject Distinguished Name that...

The vulnerability of the merge_handshake_packet() function in the GnuTLS cryptographic library allows a attacker to trigger a denial-of-service attack.

The vulnerability of the mergehandshakepacket function in the GnuTLS cryptographic library is related to errors in processing parameter values related to input data length. Exploiting this vulnerability could allow a remote attacker to cause a service failure...

PYSEC-2026-1758 Prefix Truncation Attack against ChaCha20-Poly1305 and Encrypt-then-MAC aka Terrapin

Summary Terrapin is a prefix truncation attack targeting the SSH protocol. More precisely, Terrapin breaks the integrity of SSH's secure channel. By carefully adjusting the sequence numbers during the handshake, an attacker can remove an arbitrary amount of messages sent by the client or server a...

The vulnerability of the parse_handshake_header() function in the GnuTLS cryptographic library allows a attacker to induce a service failure.

The vulnerability of the parsehandshakeheader function in the GnuTLS cryptographic library is related to integer overflow. Exploiting this vulnerability could allow a remote attacker to cause a service failure...

Security Bulletin: IBM® Db2® is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling (CVE-2026-10109)

Summary IBM® Db2® is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling. Vulnerability Details CVEID:CVE-2026-10109 DESCRIPTION: IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to remote code execution due to improper pre-auth DRDA handshak...

USN-8502-1: GnuTLS vulnerabilities

It was discovered that GnuTLS had a timing side-channel when processing malformed ciphertexts in RSA-PSK ClientKeyExchange. A remote attacker could possibly use this issue to recover sensitive information. This issue only affected Ubuntu 18.04 LTS. CVE-2024-0553 Bing Shi discovered that GnuTLS...

OESA-2026-2821 nodejs security update

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices...

PT-2026-55889

Name of the Vulnerable Software and Affected Versions Apache Camel versions 4.0.0 through 4.14.7 Apache Camel versions 4.15.0 through 4.18.2 Apache Camel versions 4.19.0 through 4.20.9 Description Improper input validation in the Apache Camel Cometd component allows unauthenticated users to injec...

Weechat -- Memory leak in relay-API

The Weechat project reports: Pre-auth memory leak in relay-api POST /api/handshake unfreed JSON body → unauthenticated remote memory-exhaustion DoS...

SUSE CVE-2026-54891

Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a network-positioned attacker to inject unauthenticated plaintext that the TLS client application later treats as authenticated server data. The...

CVE-2026-54891

A flaw was found in Erlang's SSL Secure Sockets Layer component. A network-positioned attacker can exploit this vulnerability by injecting unauthenticated plaintext data into a client's TLS Transport Layer Security handshake. The client application may then process this injected data as if it wer...

Linux Distros Unpatched Vulnerability : CVE-2026-54891

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in Erlang/OTP ssl tlsgenconnection module allows a...

GHSA-63WG-WJJJ-7CP8 Zebra Address Book Aborted by IPv4-Mapped Mempool Misbehavior Update

Am I affected You are affected if: 1. You run zebrad up to and including v4.4.1. 2. Your node listens on the default :: address on a Linux host the standard deployment configuration — net.ipv6.bindv6only=0 is the default on all common Linux distributions. 3. Your node is synced near the chain tip...