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CVE-2026-71418 Details

Description

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, DNS-over-HTTP/2 processing in rust/src/http2/http2.rs retains previously processed HTTP/2 DATA frame contents instead of clearing the internal buffer. Multiple DATA frames with the EndOfStream flag set can grow the buffer to its 65 KiB limit while causing all prior contents to be processed again, producing quadratic CPU complexity, degraded packet processing, loss of monitoring visibility, or denial of service. This issue is fixed in version 8.0.6.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/OISF/suricata/commit/1731805967edf5d31448db2ae43cf72c6cf46c11	[email protected]
https://github.com/OISF/suricata/commit/26c26dea84f00de95151a0e16d21c1fcafac9648	[email protected]
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6	[email protected]
https://github.com/OISF/suricata/security/advisories/GHSA-xjgq-3qw4-jp5f	[email protected]
https://redmine.openinfosecfoundation.org/issues/8725	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-407	Inefficient Algorithmic Complexity	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 21, 2026	CVE Modified	CISA-ADP
Sep 18, 2026	New CVE Received	[email protected]