CVE-2026-94083
CRITICAL
CVSS 9.4
Published: 2026-09-20
Modified: 2026-09-20
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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.
Quick Facts
| CVE ID | CVE-2026-94083 |
| CVSS Score | 9.4 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
| Published | 2026-09-20 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |