CVE-2026-63452
highpriority · track · 0EPSS 0.006 · 50 %ileUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
sources
Which sources assert this record, and when.
references (5) nvd
External citations — patches, advisories, analysis.
- 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-5x84MitigationVendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8694Permissions Required
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