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 known workarounds are available.
Exploitability
AV:NAC:LPR:LUI:NScope
S:UImpact
C:LI:HA:N7.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:NAccess Control