CVE-2026-94083

State: Published
Severity: 9.4 Critical
Published: Sep 20, 2026
Updated: Sep 22, 2026
Reserved: Sep 20, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	9.4 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L	mitre

Weaknesses

CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

Affected Products

Product	Versions
SuricataOISF	8.0.0 to before 8.0.7Affected

References

https://forum.suricata.io/t/suricata-8-0-7-released/6467
https://github.com/OISF/suricata/commit/e574009add9c208f319e1d9d15b3bb1229c88074
https://github.com/OISF/suricata/compare/suricata-8.0.6...suricata-8.0.7

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