{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.11.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2acc0ec1ead226145c62a817c18c8ed49233a283"
            },
            {
              "fixed": "4af910bc99c2f021f0cd56f6ca7f7600f4dda4a0"
            }
          ],
          "repo": "https://github.com/yawkat/lz4-java",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-gm45-99xc-r7wv"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106450.json"
  },
  "details": "yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4FrameInputStream readHeader() allocates two new 4 MiB block buffers whenever a maximum-block-size frame header is read, and the default concatenated-frame mode allows attacker-controlled streams containing many minimal empty frames to trigger roughly 8 MiB of allocation for every 11 input bytes. The stream produces no decompressed output while consuming CPU and garbage-collection time, so decompressed-size limits do not mitigate the issue; readSingleFrame mode is not affected. This issue is fixed in version 1.11.4.",
  "id": "CVE-2026-106450",
  "modified": "2026-10-08T02:30:18.933034788Z",
  "published": "2026-10-06T19:48:40.092Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/yawkat/lz4-java/releases/tag/v1.11.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106450.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/yawkat/lz4-java/security/advisories/GHSA-gm45-99xc-r7wv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-106450"
    },
    {
      "type": "FIX",
      "url": "https://github.com/yawkat/lz4-java/commit/2acc0ec1ead226145c62a817c18c8ed49233a283"
    }
  ],
  "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: LZ4FrameInputStream reallocates block buffers for every frame, allowing CPU and GC amplification from small inputs"
}