BIT-NATS-2026-33219 NATS is vulnerable to pre-auth DoS through WebSockets client service

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, a malicious client which can connect to the WebSockets port can cause unbounded memory use in the nats-server before authentication; this requires sending a...

RLSA-2026:5146 Important: yggdrasil security update

yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate child "worker" process, exchanging data with its worker processes through a D-Bus message broker. Security Fixes: crypto/x509: golang: Denial of Service due to...

BIT-DISCOURSE-2026-31869 Discourse: Composer mentions endpoint leaks hidden group membership through PM `allowed_names` check

Discourse is an open-source discussion platform. Prior to versions 2026.3.0, 2026.2.1, and 2026.1.2, the ComposerControllermentions endpoint reveals hidden group membership to any authenticated user who can message the group. By supplying allowednames referencing a hidden-membership group and...

BIT-NATS-2026-33215 NATS is vulnerable to MQTT hijacking via Client ID

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. The nats-server provides an MQTT client interface. Prior to versions 2.11.15 and 2.12.5, Sessions and Messages can by hijacked via MQTT Client ID malfeasance. Versions 2.11.15 and 2.12.5 patch the issu...

CVE-2026-33249

A flaw was found in NATS-Server. A valid client can exploit this flaw by manipulating message tracing headers to redirect trace messages to any valid subject, even those for which the client lacks publish permissions. This allows for unauthorized sending of trace messages, potentially bypassing...

DEBIAN-CVE-2026-33249

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing headers can indicate that the trace messages can be sent to an arbitrary valid subject,...

CVE-2026-33222

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, users with JetStream admin API access to restore one stream could restore to other stream names, impacting data which should have been protected against them...

UBUNTU-CVE-2026-33223

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, the NATS message header Nats-Request-Info: is supposed to be a guarantee of identity by the NATS server, but the stripping of this header from inbound messages was...

CVE-2026-33246

A flaw was found in NATS-Server. A remote attacker, by connecting a leafnode to a NATS-Server, could propagate unchecked identity claims through the Nats-Request-Info: message header. This vulnerability allows for the spoofing of client identities, potentially leading to NATS clients making...

CVE-2026-33223

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, the NATS message header Nats-Request-Info: is supposed to be a guarantee of identity by the NATS server, but the stripping of this header from inbound messages was...

CVE-2026-27889

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and...

CVE-2026-33216

Impactful CVE-2026-33216 (NATS-Server) : In MQTT deployments using usercodes/passwords, passwords are incorrectly classified as a non-authenticating identity statement (JWT) and exposed through monitoring endpoints. Affected versions are prior to 2.11.15 and 2.12.6; fixes are in 2.11.14 and 2.12....

CVE-2026-33216 NATS has MQTT plaintext password disclosure

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, for MQTT deployments using usercodes/passwords: MQTT passwords are incorrectly classified as a non-authenticating identity statement JWT and exposed via monitoring...

Incorrect Authorization

Overview github.com/nats-io/nats-server/v2/server is an A simple, secure and performant communications system for digital systems, services and devices. Affected versions of this package are vulnerable to Incorrect Authorization due to improper enforcement of access control in the $MQTT. namespac...

FBI Warns of Iran’s Handala Hack Group Using Fake Apps to Spy on Windows Users

The FBI has issued a warning about Iran-linked Handala Hack Group, targeting Windows users through fake versions of WhatsApp and Telegram...

This Week in Spring - March 24th, 2026

Hi, Spring fans! Welcome to yet another rip-roarin' installment of This Week in Spring. As usual, we've got a ton to look into, so let's dive right in! Happy 22nd birthday to Spring Framework, released this day 22 years ago! and of course, next week, 1 April 2026, marks 12 years since Spring Boot...

FBI Warns Russian Hackers Target Signal, WhatsApp in Mass Phishing Attacks

Threat actors affiliated with Russian Intelligence Services are conducting phishing campaigns to compromise commercial messaging applications CMAs like WhatsApp and Signal to seize control of accounts belonging to individuals with high intelligence value, the U.S. Cybersecurity and Infrastructure...

CVE-2026-32027 OpenClaw < 2026.2.26 - Improper Authorization via DM Pairing Store Identity Inheritance in Group Allowlist

OpenClaw versions prior to 2026.2.26 contain an authorization bypass vulnerability where DM pairing-store identities are incorrectly eligible for group allowlist authorization checks. Attackers can exploit this cross-context authorization flaw by using a sender approved via DM pairing to satisfy...

Discourse 信息泄露漏洞

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from an information disclosure vulnerability that stems from the /private-posts endpoint not applying post type...

PT-2026-26231

OpenClaw versions prior to 2026.2.26 contain an authorization bypass vulnerability where Signal group allowlist policy incorrectly accepts sender identities from DM pairing-store approvals. Attackers can exploit this boundary weakness by obtaining DM pairing approval to bypass group allowlist...