9.4
Critical
CVE-2026-94083 Suricata before 8.0.7 has a DoH2 type confusion that can cause an invalid free, because cleanup code for the HTTP2 state…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| suricata 8.0 | 8.0.0 → < 8.0.7 | 8.0.7 |
Other CVEs of suricata
The 86 CVEs of suricata →
CVE-2026-94084
Suricata before 8.0.7 has an Http2ThreadMultiBuf use-after-free when a transaction is inspected by rules that use…
9.4
Critical
CVE-2026-71855
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine
5.9
Medium
CVE-2026-71418
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine
7.5
High
CVE-2026-57223
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine
7.0
High