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Vulnerabilities / CVE-2026-94083

critical

CVE-2026-94083

suricata: suricata: type confusion and invalid free in DoH2 protocol handling

Published Modified CWE 843
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

Red Hat9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by Red Hat.

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 packages and fixed versions

SourcePackageFixed in
debian 11suricatano fix listed
debian 13suricatano fix listed
debian 14suricata1:8.0.7-1
echosuricatano fix listed
rapidfort alpine 3.20suricata8.0.7-r0
rapidfort alpine 3.21suricata8.0.7-r0
rapidfort alpine 3.22suricata8.0.7-r0
rapidfort alpine 3.23suricata8.0.7-r0
rapidfort alpine 3.24suricata8.0.7-r0
rapidfort debian 12suricata1:8.0.7-1
rapidfort debian 13suricata1:8.0.7-1
rapidfort ubuntu 20.04suricatano fix listed
Show all 14 entries from 14 sources
SourcePackageFixed in
debian 11suricatano fix listed
debian 13suricatano fix listed
debian 14suricata1:8.0.7-1
echosuricatano fix listed
rapidfort alpine 3.20suricata8.0.7-r0
rapidfort alpine 3.21suricata8.0.7-r0
rapidfort alpine 3.22suricata8.0.7-r0
rapidfort alpine 3.23suricata8.0.7-r0
rapidfort alpine 3.24suricata8.0.7-r0
rapidfort debian 12suricata1:8.0.7-1
rapidfort debian 13suricata1:8.0.7-1
rapidfort ubuntu 20.04suricatano fix listed
rapidfort ubuntu 22.04suricatano fix listed
rapidfort ubuntu 24.04suricatano fix listed

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.