CVE-2026-45764

    Dashboard / Vulnerabilities / CVE-2026-45764

    CVE-2026-45764

    Published: 10 Sept 2026Last Modified: 12 Sept 2026

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

    Details: 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://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315, https://redmine.openinfosecfoundation.org/issues/8492, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45764.json, https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr, https://nvd.nist.gov/vuln/detail/CVE-2026-45764

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 9956286fb89f9cad9e9f95b99dc751f8666617b7
    Fixed -5611b60c6172fe4204cd69a9c9d466b6632dd0c7

    Affected versions

    suricata-8.0.4
    suricata-8.0.3
    suricata-8.0.2
    suricata-8.0.1
    suricata-8.0.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-45764 | CVE-DB