CVE-2026-57227

suricata: Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine

CVE-2026-57227 is fixed in suricata on 1 platform by DEBIAN-CVE-2026-57227 (version 1:8.0.6-1), released September 11, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0070
53rd 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.

Where it's fixed

ProductFixed inFixReleased
Linux
suricata · Debian 14 1:8.0.6-1 DEBIAN-CVE-2026-57227 Sep 11, 2026

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