nats-server: NATS Server: Protocol stream corruption and unintended operation injection via MQTT client subscription filters

A flaw was found in NATS Server. An authenticated MQTT client could exploit this by embedding protocol control characters within subscription filters. These characters would then be forwarded as NATS protocol data to route or leafnode connections, leading to the corruption of the protocol stream...

nats-server: NATS Server: Information disclosure due to inconsistent MQTT topic rechecking

A flaw was found in NATS Server. This vulnerability allows for unauthorized information disclosure where MQTT messages, intended to be denied based on subscription rules, are still delivered to subscribers. This occurs because the server's delivery paths do not consistently recheck the original...

nats-server: NATS Server: Denial of Service via inconsistent message trace destination checks

A flaw was found in NATS Server. Message trace destination checks, which ensure that trace events are sent to authorized subjects, were not consistently applied to messages originating from leafnode connections. This inconsistency allows a leafnode operator to bypass these checks and send trace...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: nats-server2.12: nats-server2.12-2.12.12-1.hum1 aarch64, x8664 nats-server2.12-2.12.12-1.hum1.src src...

nats-server: NATS Server: Information disclosure via MQTT client subscription bypass

A flaw was found in NATS Server, a high-performance messaging system. An authenticated MQTT Message Queuing Telemetry Transport client could bypass security permissions by subscribing to an internal subject family. This unauthorized access allows the client to view sensitive MQTT Quality of Servi...

nats-server: NATS Server: Authentication bypass allows unauthorized access and information disclosure

A flaw was found in NATS Server, a high-performance messaging system. This vulnerability allows a client to bypass normal authentication and connection restrictions by registering as a "noauthuser" through a specific parser path. This occurs when the client's initial operation is not a standard...

nats-server: NATS Server: Information disclosure due to inconsistent MQTT topic rechecking

A flaw was found in NATS Server. This vulnerability allows for unauthorized information disclosure where MQTT messages, intended to be denied based on subscription rules, are still delivered to subscribers. This occurs because the server's delivery paths do not consistently recheck the original...

nats-server: NATS Server: Denial of Service via inconsistent message trace destination checks

A flaw was found in NATS Server. Message trace destination checks, which ensure that trace events are sent to authorized subjects, were not consistently applied to messages originating from leafnode connections. This inconsistency allows a leafnode operator to bypass these checks and send trace...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: nats-server2.14: nats-server2.14-2.14.3-1.hum1 aarch64, x8664 nats-server2.14-2.14.3-1.hum1.src src...

nats-server: NATS Server: Denial of Service via incomplete MQTT CONNECT packets

A flaw was found in NATS Server. An unauthenticated remote attacker could send large, incomplete MQTT CONNECT packets to the server. This action causes the server to retain these packets, consuming significant memory before authentication is complete. This can lead to a denial of service DoS...

nats-server: NATS Server: Information disclosure via MQTT client subscription bypass

A flaw was found in NATS Server, a high-performance messaging system. An authenticated MQTT Message Queuing Telemetry Transport client could bypass security permissions by subscribing to an internal subject family. This unauthorized access allows the client to view sensitive MQTT Quality of Servi...

nats-server: NATS Server: Protocol stream corruption and unintended operation injection via MQTT client subscription filters

A flaw was found in NATS Server. An authenticated MQTT client could exploit this by embedding protocol control characters within subscription filters. These characters would then be forwarded as NATS protocol data to route or leafnode connections, leading to the corruption of the protocol stream...

nats-server: NATS Server: Authentication bypass allows unauthorized access and information disclosure

A flaw was found in NATS Server, a high-performance messaging system. This vulnerability allows a client to bypass normal authentication and connection restrictions by registering as a "noauthuser" through a specific parser path. This occurs when the client's initial operation is not a standard...

Improperly Controlled Modification of Dynamically-Determined Object Attributes

Overview Affected versions of this package are vulnerable to Improperly Controlled Modification of Dynamically-Determined Object Attributes via the NatsConsumer process. An attacker can manipulate downstream producer behavior by injecting arbitrary control headers into messages published to the...

Apache Camel-NATS: Inbound NATS message headers are mapped into the Exchange without a configured HeaderFilterStrategy, allowing a client that can publish to the subject to inject Camel control headers

Improper Input Validation vulnerability in Apache Camel NATS component. The camel-nats component maps inbound NATS message headers into the Camel Exchange but defaulted its headerFilterStrategy to a bare new DefaultHeaderFilterStrategy with no inbound rules configured NatsConfiguration. With no...

GHSA-7V55-Q9X3-83CJ Apache Camel-NATS: Inbound NATS message headers are mapped into the Exchange without a configured HeaderFilterStrategy, allowing a client that can publish to the subject to inject Camel control headers

Improper Input Validation vulnerability in Apache Camel NATS component. The camel-nats component maps inbound NATS message headers into the Camel Exchange but defaulted its headerFilterStrategy to a bare new DefaultHeaderFilterStrategy with no inbound rules configured NatsConfiguration. With no...

CVE-2026-46457

Improper Input Validation vulnerability in Apache Camel NATS component. The camel-nats component maps inbound NATS message headers into the Camel Exchange but defaulted its headerFilterStrategy to a bare new DefaultHeaderFilterStrategy with no inbound rules configured NatsConfiguration. With no...

CVE-2026-46457 Apache Camel: Camel-NATS: Inbound NATS message headers are mapped into the Exchange without a configured HeaderFilterStrategy, allowing a client that can publish to the subject to inject Camel control headers

Improper Input Validation vulnerability in Apache Camel NATS component. The camel-nats component maps inbound NATS message headers into the Camel Exchange but defaulted its headerFilterStrategy to a bare new DefaultHeaderFilterStrategy with no inbound rules configured NatsConfiguration. With no...

CVE-2026-46457

Apache Camel's camel-nats component contains an Improper Input Validation vulnerability (CWE-20) because it defaults to a DefaultHeaderFilterStrategy without inbound rules. This allows a client capable of publishing to a NATS subject (version 2.2+) to inject arbitrary Camel control headers , such...

CVE-2026-46457 Apache Camel: Camel-NATS: Inbound NATS message headers are mapped into the Exchange without a configured HeaderFilterStrategy, allowing a client that can publish to the subject to inject Camel control headers

Improper Input Validation vulnerability in Apache Camel NATS component. The camel-nats component maps inbound NATS message headers into the Camel Exchange but defaulted its headerFilterStrategy to a bare new DefaultHeaderFilterStrategy with no inbound rules configured NatsConfiguration. With no...