23 Oct 2026 15:48:27 UTC
Suricata http1: repeated brotli compression bombs can cause excessive CPU consumption
cve-program · CVE-2026-63452 · Published
CVE-2026-63452
Suricata http1: repeated brotli compression bombs can cause excessive CPU consumption
CVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-63452
PublishedSuricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the HTTP/1 parser limits decompression work per transaction but does not limit how many small brotli compression bombs a single flow can submit. With response-body-decompress-layer-limit enabled, repeated compressed responses make the decompression paths in rust/htp perform expensive work for every transaction, degrading packet processing and potentially causing loss of monitoring visibility or denial of service. This issue is fixed in version 8.0.6.
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