CVE-2026-57227: Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.0 until 7.0.17 and 8.0.6, the…

PriorityP344high7.5CVSS 3.1

AVNACLPRNUINSUCNINAH

EPSS

0.70%

52.6th percentile

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.0 until 7.0.17 and 8.0.6, the MQTT parser in rust/src/mqtt/mqtt.rs permits repeated PUBREC or PUBREL messages to be appended to one transaction without a limit. Crafted MQTT traffic can grow transaction state indefinitely, consuming CPU and memory and causing slowdown or denial of service. This issue is fixed in versions 8.0.6 and 7.0.17.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
oisf	suricata	—	—
oisf	suricata	—	—
oisf	suricata	>= 7.0.0 < 7.0.17	7.0.17
oisf	suricata	>= 8.0.0 < 8.0.6	8.0.6

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