Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-58213

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.1 and 2.12.9, an MQTT client could include protocol control characters in subscription filters that were later forwarded as NATS protocol data to route or leafnode connections, corrupting the forwarded protocol stream and allowing injection of unintended NATS protocol operations. This issue is fixed in versions 2.14.1 and 2.12.9.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 35.4%
CVSS Severity
CVSS v3 Score 7.1
Products affected by CVE-2026-58213


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