{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.12.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "fb918688bff7dfcfb377d8dbdea65fc785d5ae99"
            }
          ],
          "repo": "https://github.com/amazon-ion/ion-java",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-wj53-jv76-65mc"
  ],
  "database_specific": {
    "cna_assigner": "AMZN",
    "cwe_ids": [
      "CWE-409"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75936.json"
  },
  "details": "Improper handling of highly compressed data in the GZIP auto-decompression handler in Amazon ion-java before 1.12.0 might allow remote actors to cause a denial of service via a crafted compressed Ion document that expands to an arbitrarily large size upon decompression.\n\n\n\nTo remediate this issue, users should upgrade to version 1.12.0 and configure withGzipDecompressionEnabled(false) and/or set an explicit withMaximumBufferSize() when parsing untrusted input.",
  "id": "CVE-2026-75936",
  "modified": "2026-08-22T03:31:14.040019403Z",
  "published": "2026-08-18T19:34:19.472Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-083-aws/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75936.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/amazon-ion/ion-java/security/advisories/GHSA-wj53-jv76-65mc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75936"
    },
    {
      "type": "FIX",
      "url": "https://github.com/amazon-ion/ion-java/releases/tag/v1.12.0"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Memory-amplification denial of service via GZIP decompression bomb in Amazon ion-java"
}