Security advisory

{
  "id": "5b2dbdf31b35d5ea1dd0c75ab9b5d9df25cc29003f6ea49581e470a86b95765a",
  "url": "https://osv.dev/vulnerability/CVE-2023-31670",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-31670",
    "summary": "An issue in wasm2c 1.0.32, wasm2wat 1.0.32, wasm-decompile 1.0.32, and wasm-validate 1.0.32 allows attackers to cause a Denial of Service (DoS) via running a crafted binary.",
    "evidence": "osv:CVE-2023-31670",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-31670",
      "aliases": [
        "CVE-2023-31670"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/webassembly/wabt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e5b042a72e6b6395e1d77901e7a413d6af87ae67"
                },
                {
                  "last_affected": "e5b042a72e6b6395e1d77901e7a413d6af87ae67"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:webassembly:webassembly_binary_toolkit:1.0.32:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.32"
                      },
                      {
                        "last_affected": "1.0.32"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.32"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-31670.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.161484788Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/31xxx/CVE-2023-31670.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-31670",
        "https://github.com/WebAssembly/wabt/issues/2199"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/31xxx/CVE-2023-31670.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-31670",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488015,
  "published_at": "2023-05-23T00:00:00+00:00"
}