rootpwn

high · CVSS v3 7.5

CVE-2026-71418

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Fr…

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.

Scores

Severity
high
CVSS v2
7.8
CVSS v3
7.5
CVSS v4
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EPSS
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