CVE-2026-63452

Suricata 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.

• https://github.com/OISF/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5fPatch
• https://github.com/OISF/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88Patch
• https://github.com/OISF/suricata/releases/tag/suricata-8.0.6Release Notes
• https://github.com/OISF/suricata/security/advisories/GHSA-j9cx-w9xm-5x84Mitigation
• https://redmine.openinfosecfoundation.org/issues/8694Permissions Required