CVEvulnerability
CVE-2026-71418
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-18
- Last modified
- 2026-09-28
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-407
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.
Affected configurations
• oisf suricata (>= 8.0.0 < 8.0.6)
Related
Weakness · CWE (1)
- CWE-407 Inefficient Algorithmic Complexity weakness
References
- https://github.com/OISF/suricata/commit/1731805967edf5d31448db2ae43cf72c6cf46c11 Patch
- https://github.com/OISF/suricata/commit/26c26dea84f00de95151a0e16d21c1fcafac9648 Patch
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 Release Notes
- https://github.com/OISF/suricata/security/advisories/GHSA-xjgq-3qw4-jp5f Mitigation, Vendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8725 Issue Tracking