CVE-2026-58209
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
4.3 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Vulnerability Description
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.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-863
Source
NVD
Vendor
nats-io
Product
nats-server
External References
- https://github.com/nats-io/nats-server/commit/181b1f51f40b9954c57e9d478e051fb257679356
- https://github.com/nats-io/nats-server/commit/1c429b6fdc5afd4188cc5faf1127f6334896cd87
- https://github.com/nats-io/nats-server/releases/tag/v2.12.12
- https://github.com/nats-io/nats-server/releases/tag/v2.14.3
- https://github.com/nats-io/nats-server/security/advisories/GHSA-7qmq-8cc4-hxwg
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