{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.11.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6492ce5aca6bd03ff9e08ee18a2beb94c431371a"
            },
            {
              "fixed": "0569f2e80433ac67f89616364a8f584ec3b20c45"
            }
          ],
          "repo": "https://github.com/yawkat/lz4-java",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6cx8-rjf8-pr8g"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106453.json"
  },
  "details": "yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, LZ4DecompressorWithLength uses getDecompressedLength to trust the four-byte decompressed-length header before validating the compressed input, allowing a five-byte attacker-supplied input whose header declares a large output size to request up to approximately 2 GiB and exhaust the JVM heap. Convenience overloads backed by LZ4FastDecompressor or LZ4SafeDecompressor allocate the untrusted size, while overloads that write to a caller-provided destination buffer are not affected because the caller controls the destination size. This issue is fixed in version 1.11.2.",
  "id": "CVE-2026-106453",
  "modified": "2026-10-09T02:31:01.186616784Z",
  "published": "2026-10-06T19:54:04.124Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/yawkat/lz4-java/releases/tag/v1.11.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106453.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-6cx8-rjf8-pr8g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-106453"
    },
    {
      "type": "FIX",
      "url": "https://github.com/yawkat/lz4-java/commit/6492ce5aca6bd03ff9e08ee18a2beb94c431371a"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "yawkat LZ4 Java: LZ4DecompressorWithLength allocates the unvalidated size from the 4-byte length header, so a 5-byte input triggers a 1 GiB allocation and OutOfMemoryError"
}