CVE-2026-94083

EUVD-2026-83638
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.
Type Confusion
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
mitreCNA
9.4 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 34.19%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
oisfsuricata
8.0.0 ≤
𝑥
< 8.0.7
CNA
Debian logo
Debian Releases
Debian Product
Codename
suricata
forky
1:8.0.7-1
fixed
sid
1:8.0.7-1
fixed
trixie
vulnerable
Common Weakness Enumeration
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