CVE-2026-94083

Published: Sep 20, 2026Updated: Sep 22, 2026 Sources: CVE List NVDCWE-843

9.4CRITICAL

NVD MITRE

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:LAvailability

Low

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Weaknesses

CWE-843

Affected Products

OISF

oss-projectaka libhtp, suricata, suricata-update

SuricataOn-premNetwork Device

Networking Infrastructure / firewall

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

View detailed technique mapping

References

https://forum.suricata.io/t/suricata-8-0-7-released/6467

forum.suricata.io

https://github.com/OISF/suricata/commit/e574009add9c208f319e1d9d15b3bb1229c88074

github.com

https://github.com/OISF/suricata/compare/suricata-8.0.6...suricata-8.0.7

github.com

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