{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "4.9.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8f3a7cbccdf6b908844cff49bd9f9fe57a466e36"
            }
          ],
          "repo": "https://github.com/litespeedtech/lsquic",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115482.json"
  },
  "details": "In lsquic before 4.9.0, the HTTP/3 implementation can use an excessive amount of memory because the number of buffered header sets is not limited, as demonstrated by a QPACK amplification attack. This is related to header_out_dynamic_entry and es_max_header_list_size.",
  "id": "CVE-2026-115482",
  "modified": "2026-10-23T10:30:43.801174982Z",
  "published": "2026-10-22T15:07:30.961Z",
  "references": [
    {
      "type": "ARTICLE",
      "url": "https://foxio.io/blog/header-accordions-qpack-amplification-attacks-against-http-3-servers"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115482.json"
    },
    {
      "type": "WEB",
      "url": "https://github.com/litespeedtech/lsquic/compare/v4.8.2...v4.9.0"
    },
    {
      "type": "FIX",
      "url": "https://github.com/litespeedtech/lsquic/pull/666"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115482"
    }
  ],
  "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"
    }
  ]
}