Denial of Service issue in Amazon.IonDotnet

{
  "id": "58397ac143b1169f8e083d5cf0cb55034c1b2079a92afd2820134d524f7d198b",
  "url": "https://osv.dev/vulnerability/CVE-2025-11573",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Denial of Service issue in Amazon.IonDotnet",
    "summary": "An infinite loop issue in Amazon.IonDotnet library versions",
    "evidence": "osv:CVE-2025-11573",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-11573",
      "aliases": [
        "CVE-2025-11573",
        "GHSA-q5r6-9qwq-g2wj"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/amazon-ion/ion-dotnet",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "d116f5574375a61c0257e00af8498b22281cb837"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.3.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d116f5574375a61c0257e00af8498b22281cb837"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.3.2"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.3.1",
            "v1.3.0",
            "v1.2.3",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0",
            "v0.9.0-beta",
            "v0.9.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-11573.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.007686370Z",
      "provider": "osv",
      "references": [
        "https://aws.amazon.com/security/security-bulletins/AWS-2025-022/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/11xxx/CVE-2025-11573.json",
        "https://github.com/amazon-ion/ion-dotnet/security/advisories/GHSA-q5r6-9qwq-g2wj",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-11573",
        "https://github.com/amazon-ion/ion-dotnet/releases/tag/v1.3.2"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1286"
        ],
        "cna_assigner": "AMZN",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/11xxx/CVE-2025-11573.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-11573",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500179,
  "published_at": "2025-10-09T17:48:13.305+00:00"
}