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CVE-2026-94083

Suricata · Vulnerability

CVSS 3.1 9.4 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-94083

Published

Suricata before 8.0.7 has a DoH2 type confusion that can cause an invalid free, because cleanup code for the HTTP2 state is executed even though the actual state is HTTP1 (when there is a DoH2 request with an HTTP1 to HTTP2 upgrade). This requires app-layer.protocols.doh2 to be enabled, which is the default in 8.x versions.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-94083

Published

Suricata

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "unaffected",
                    "product": "Suricata",
                    "vendor": "OISF",
                    "versions": [
                        {
                            "lessThan": "8.0.7",
                            "status": "affected",
                            "version": "8.0.0",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON