7.5

CVE-2026-58210

NATS Server: MQTT partial CONNECT packets can exhaust pre-auth memory

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, an unauthenticated MQTT client could cause the server to retain large incomplete MQTT CONNECT packets before authentication completed, consuming server memory while the parser waited for the advertised MQTT packet length. This issue is fixed in versions 2.14.3 and 2.12.12.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linuxfoundation ≫ Nats-server Version < 2.12.12
Linuxfoundation ≫ Nats-server Version >= 2.14.0 < 2.14.3
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.51% 0.402
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

https://github.com/nats-io/nats-server/releases/tag/v2.12.12
Release Notes
https://github.com/nats-io/nats-server/releases/tag/v2.14.3
Release Notes
https://github.com/nats-io/nats-server/commit/bce9ef39469e610aeddb819194ceb7f7edfc0861
Patch
https://github.com/nats-io/nats-server/commit/e016e47bbf70304945f2ae9dc397e4862adefaf5
Patch
https://github.com/nats-io/nats-server/security/advisories/GHSA-r72h-j7qq-v6qg
Vendor Advisory