CVE-2026-57227
Publication date 18 September 2026
Last updated 23 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| suricata | 26.04 LTS resolute |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-57227
- 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)