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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-45764

Suricata http2: protocol-change type confusion can lead to denial of service

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

OISF suricata

  • >= 8.0.0, < 8.0.5affected
  • < 7.0.16affected

References