CVE-2026-58209Medium· 4.3▾ SunlitNATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, MQTT retained message delivery and QoS1+ durable replay could deliver messages whose original topics matched a…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 23.7 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Jul 13.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, MQTT retained message delivery and QoS1+ durable replay could deliver messages whose original topics matched a subscriber configured subscribe deny rule because these delivery paths did not consistently recheck the concrete original topic before sending the MQTT PUBLISH to the subscriber. This issue is fixed in versions 2.14.3 and 2.12.12.
nats-server < 2.12.12nats-server >= 2.14.0, < 2.14.3Upgrade past the affected range:
nats-server 2.14.3Connected by shared product, vendor, weakness, or advisory.
CVE-2026-58214Medium· 4.3NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system
CVE-2026-58254Medium· 6.5NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system
CVE-2026-58210High· 7.5NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system
CVE-2026-33217High· 7.1NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system
CVE-2026-33247High· 7.4NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system
CVE-2026-33219Medium· 5.3NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system