{"id":"CVE-2026-63452","title":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine","summary":"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 b…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400","CWE-409"],"vendor":"OISF","product":"suricata","affected":["suricata >= 8.0.0, < 8.0.6"],"published":"2026-09-18","updated":"2026-09-21","sourceUpdated":"2026-09-21T19:17:08.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63452","references":[{"url":"https://github.com/OISF/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5f","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/releases/tag/suricata-8.0.6","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-j9cx-w9xm-5x84","label":"security-advisories@github.com"},{"url":"https://redmine.openinfosecfoundation.org/issues/8694","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00361,"epssPercentile":0.29823,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-21T18:19:39.620230Z"},"ingestedAt":"2026-09-18T20:51:25.797Z","slug":"CVE-2026-63452","body":"## Overview\n\nSuricata 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}