CVE-2026-45764

CriticalCVSS 9.1/10Last modified Sep 16, 2026

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.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Weakness enumeration

CWE-843

Affected software

Vendor	Product	Versions
OISF	suricata	>= 8.0.0, < 8.0.5; < 7.0.16

References

https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315Release Notes, Vendor Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhrThird Party Advisory
https://redmine.openinfosecfoundation.org/issues/8492Permissions Required

Timeline

Published: Sep 10, 2026
Last modified: Sep 16, 2026
NVD status: Analyzed

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