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CVE-2026-45764

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

CVSS 3.1 9.1 CRITICALCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-45764

Published

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.

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Affected versions, risk and source history

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Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-45764 · CVE overview and exploitation status

cve-program · CVE-2026-45764

Related changes

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