Detections
Analytics
CVE-2026-71418
high
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.
References
https://redmine.openinfosecfoundation.org/issues/8725
https://github.com/OISF/suricata/security/advisories/GHSA-xjgq-3qw4-jp5f
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
https://github.com/OISF/suricata/commit/26c26dea84f00de95151a0e16d21c1fcafac9648
https://github.com/OISF/suricata/commit/1731805967edf5d31448db2ae43cf72c6cf46c11