CVE-2026-45764: oisf suricata

CVSS 9.1 (critical) · published 2026-09-10

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.

Affected products (NVD): oisf suricata

Fixed in (NVD): 7.0.16, 8.0.5

Weakness: CWE-843

Source: NVD CVE-2026-45764

References

• https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
• https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr
• https://redmine.openinfosecfoundation.org/issues/8492

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