AUGUST 24, 2026
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Case File

CVE-2026-58210

HIGH · CVSS 7.5 EPSS 0.51% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-08 · Last synced 2026-08-07

CyberRota Analysis

AI-Generated

NATS Server versions prior to 2.14.3 and 2.12.12 are vulnerable to a memory consumption issue that allows unauthenticated MQTT clients to send large incomplete CONNECT packets, leading to potential denial of service as server memory is exhausted. Organizations utilizing NATS Server for messaging should prioritize upgrading to the patched versions to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-58210
Severity
HIGH
CVSS
7.5
EPSS
0.51%

Original NVD 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, 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.

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