CVE-2026-94083
criticalSuricata 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 sta…
Vendor / product: Oisf — suricata
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.
CVSS
9.4
9.4 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L Severity source: NVD CVSS v3.1 (cve@mitre.org)
Timeline (UTC)
Published: 2026-09-20 02:16
Modified: 2026-09-28 18:30
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:54 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
oisf / suricata <8.0.7
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/OISF/suricata/commit/e574009add9c208f319e1d9d15b3bb1229c88074
References
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:54 UTC · record ↗