Vulnerability Description
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 Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/OISF/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5f
- https://github.com/OISF/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
- https://github.com/OISF/suricata/security/advisories/GHSA-j9cx-w9xm-5x84
- https://redmine.openinfosecfoundation.org/issues/8694
FAQ
What is CVE-2026-63452?
CVE-2026-63452 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 transactio...
How severe is CVE-2026-63452?
CVE-2026-63452 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-63452?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.