CVE-2026-57227CWE-400CWE-770denial-of-service

CVE-2026-57227

High · published September 19, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
52.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00700 · 52.6th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-09-19T01:17Z
Affected products (2)
ProductVersionsFixed in
oisf/suricata≥ 7.0.0, < 7.0.177.0.17
oisf/suricata≥ 8.0.0, < 8.0.68.0.6
References (7)
https://github.com/OISF/suricata/commit/03ba8a71d827dd36a0ceb512f45d2f440f260a3a · [email protected]https://github.com/OISF/suricata/commit/5cde93dea38533c9b225128ba9d54955997dc273 · [email protected]https://github.com/OISF/suricata/commit/c03666d261256df5a2d1f5800872da8a5addf6a5 · [email protected]https://github.com/OISF/suricata/releases/tag/suricata-7.0.17 · [email protected]https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 · [email protected]https://github.com/OISF/suricata/security/advisories/GHSA-7h2h-hpj2-9w6p · [email protected]https://redmine.openinfosecfoundation.org/issues/8525 · [email protected]
EPSS history
Timeline
  • 20 SEP 03:23Z
    EPSS moved — → 0%
    epss
  • 18 SEP 20:14Z
    Suricata mqtt: unbounded resource consumption from repeated pubrec and pubrel messages
    cvelistv5