CVE-2026-46387

    Dashboard / Vulnerabilities / CVE-2026-46387

    CVE-2026-46387

    Published: 10 Sept 2026Last Modified: 11 Sept 2026

    Summary: Suricata http2: decompression bomb can cause denial of service in Suricata

    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, Suricata's HTTP/2 decompression path could grow the decompressed response-body buffer without an effective upper bound. A crafted HTTP/2 DATA payload using a high compression ratio, such as gzip, deflate, or brotli compressed data, could cause Suricata to allocate excessive memory while decompressing the payload. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP2.

    References: https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46387.json, https://github.com/OISF/suricata/security/advisories/GHSA-45p7-j5wm-8wrx, https://nvd.nist.gov/vuln/detail/CVE-2026-46387, https://redmine.openinfosecfoundation.org/issues/8513

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -534864353e8d6e5d50991546f96e33f547879aec

    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-2026-46387 | CVE-DB