Is CVE-2026-94083 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-94083?

CVE-2026-94083 has a CVSS v3 severity of CRITICAL (9.4).

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CVE-2026-94083

Description

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.