{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "46.0.0"
                  },
                  {
                    "fixed": "48.0.4"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "49.0.0"
                  },
                  {
                    "fixed": "49.0.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          "events": [
            {
              "introduced": "423be7a4e4d30bb377c836d317521d1eb874e157"
            },
            {
              "fixed": "d02ffd202850007ea953224f589a569e8830eb6c"
            },
            {
              "introduced": "17830bd3c0331d920a8aa38846eebc4d46d98c23"
            },
            {
              "fixed": "3c8a3e79aa3188a1a12b3aebbaa097abccceac92"
            }
          ],
          "repo": "https://github.com/bytecodealliance/wasmtime",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-w4qr-p94g-mjhv"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-1284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115382.json"
  },
  "details": "Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a denial-of-service vulnerability in its wasi:http implementation that allows guests to panic the host. Guests can specify a zero between-bytes-timeout request option, which is forwarded directly to a Tokio API that panics, crashing the host embedding.",
  "id": "CVE-2026-115382",
  "modified": "2026-10-28T02:31:01.731308136Z",
  "published": "2026-10-22T19:13:49.956Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115382.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-w4qr-p94g-mjhv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115382"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.4-and-49.0.0-before-49.0.2-wasi-http-zero-timeout-panic-dos"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 wasi:http Zero Timeout Panic DoS"
}