CVE-2026-33223

CVE-2026-33223 affects NATS-Server. Prior to versions 2.11.15 and 2.12.6, the Nats-Request-Info header, intended to guarantee identity, could still be stripped incompletely from inbound messages, allowing an attacker with valid credentials to spoof identity to services relying on that header. The...

CVE-2026-33248 NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching

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, when using mTLS for client identity, with verifyandmap to derive a NATS identity from the client certificate's Subject DN, certain patterns of RDN would not be...

CVE-2026-33248 NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching

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, when using mTLS for client identity, with verifyandmap to derive a NATS identity from the client certificate's Subject DN, certain patterns of RDN would not be...

CVE-2026-33248

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, when using mTLS for client identity, with verifyandmap to derive a NATS identity from the client certificate's Subject DN, certain patterns of RDN would not be...

CVE-2026-33248

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, when using mTLS for client identity, with verifyandmap to derive a NATS identity from the client certificate's Subject DN, certain patterns of RDN would not be...

CVE-2026-33248

NATS-Server has an authentication bypass vulnerability in mTLS verify_and_map where certain RDN patterns in the client certificate Subject DN were not correctly enforced. A valid certificate from a trusted CA could bypass identity checks on versions prior to 2.11.15 and 2.12.6. The issue is consi...

CVE-2026-33248

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, when using mTLS for client identity, with verifyandmap to derive a NATS identity from the client certificate's Subject DN, certain patterns of RDN would not be...

DEBIAN-CVE-2026-33246

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. The nats-server offers a Nats-Request-Info: message header, providing information about a request. This is supposed to provide enough information to allow for account/user identification, such that NAT...

CVE-2026-33247

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, if a nats-server is run with static credentials for all clients provided via argv the command-line, then those credentials are visible to any user who can see the...

DEBIAN-CVE-2026-33247

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, if a nats-server is run with static credentials for all clients provided via argv the command-line, then those credentials are visible to any user who can see the...

DEBIAN-CVE-2026-33219

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...

CVE-2026-33219

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...

AZL-81636 CVE-2026-33216 affecting package telegraf for versions less than 1.31.0-19

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...

DEBIAN-CVE-2026-33218

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 client which can connect to the leafnode port can crash the nats-server with a certain malformed message pre-authentication. Versions 2.11.15 and 2.12.6 contain ...

CVE-2026-33217

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, when using ACLs on message subjects, these ACLs were not applied in the $MQTT. namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects. Versions...

DEBIAN-CVE-2026-33217

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, when using ACLs on message subjects, these ACLs were not applied in the $MQTT. namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects. Versions...

DEBIAN-CVE-2026-33216

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...

CVE-2026-33216

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...

CVE-2026-33218

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 client which can connect to the leafnode port can crash the nats-server with a certain malformed message pre-authentication. Versions 2.11.15 and 2.12.6 contain ...

CVE-2026-29785

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the "leafnode" configuration enabled not default, then anyone who can connect can crash the nats-server by triggering a panic. This happens...