CVE-2026-57227

Name	CVE-2026-57227
Description	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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
suricata (PTS)	trixie	1:7.0.10-1+deb13u4	vulnerable
	forky, sid	1:8.0.7-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
suricata	source	(unstable)	1:8.0.6-1

Notes

[trixie] - suricata <ignored> (Will be removed in next point release)
https://github.com/OISF/suricata/security/advisories/GHSA-7h2h-hpj2-9w6p
https://redmine.openinfosecfoundation.org/issues/8672 (suricata-7.0.17)
https://redmine.openinfosecfoundation.org/issues/8653 (suricata-8.0.6)
https://github.com/OISF/suricata/commit/5cde93dea38533c9b225128ba9d54955997dc273 (suricata-7.0.17)
https://github.com/OISF/suricata/commit/c03666d261256df5a2d1f5800872da8a5addf6a5 (suricata-8.0.6)