{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.0.6"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "9956286fb89f9cad9e9f95b99dc751f8666617b7"
            },
            {
              "fixed": "392b6aee2971a4b5e573850f5d832112509bcb5f"
            },
            {
              "fixed": "e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88"
            },
            {
              "fixed": "4c28cc1b4ac64f48efdca6ce3e09748227a04a7e"
            }
          ],
          "repo": "https://github.com/oisf/suricata",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-j9cx-w9xm-5x84"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-400",
      "CWE-409"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63452.json"
  },
  "details": "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.",
  "id": "CVE-2026-63452",
  "modified": "2026-09-20T11:30:32.756870481Z",
  "published": "2026-09-18T20:16:51.951Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/OISF/suricata/releases/tag/suricata-8.0.6"
    },
    {
      "type": "WEB",
      "url": "https://redmine.openinfosecfoundation.org/issues/8694"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63452.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/OISF/suricata/security/advisories/GHSA-j9cx-w9xm-5x84"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63452"
    },
    {
      "type": "FIX",
      "url": "https://github.com/OISF/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5f"
    },
    {
      "type": "FIX",
      "url": "https://github.com/OISF/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Suricata http1: repeated brotli compression bombs can cause excessive CPU consumption"
}