CVE-2026-45764

critical

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata to crash, resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP/2 parsing if it is not required.

References

https://redmine.openinfosecfoundation.org/issues/8492

https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr

https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315

Details

Source: Mitre, NVD

Published: 2026-09-10

Updated: 2026-09-16

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00067