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THREAT OPS › Threat News › [NVD] CVE-2026-33217 (HIGH 7.1) — 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 s

[NVD] CVE-2026-33217 (HIGH 7.1) — 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 s

lownvdPublished 2026-03-25

CVE-2026-33217 CVSS: 7.1 HIGH Published: 2026-03-25T20:16:32.473

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 2.11.15 and 2.12.6 contain a fix. No

Indicators of compromise

CVE-2026-33217cve
nats.iodomain

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-33217