{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "1.2.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "06bdc3744a96b736a7118891f403e44c664f108b"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "55b26f0562ab2ca75042918e663ecf1a676c6d7d"
            },
            {
              "fixed": "06bdc3744a96b736a7118891f403e44c664f108b"
            }
          ],
          "repo": "https://github.com/ning/compress",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109395.json"
  },
  "details": "Ning compress-lzf before 1.2.0 contains an out-of-bounds memory access vulnerability in the sun.misc.Unsafe based UnsafeChunkDecoder that fails to validate back-references and literal runs. Attackers can supply crafted LZF streams to applications using the default LZFDecoder to leak unrelated JVM heap memory into decompressed output or crash the JVM.",
  "id": "CVE-2026-109395",
  "modified": "2026-10-21T02:30:51.910476438Z",
  "published": "2026-10-20T00:46:04.633Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109395.json"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/github/securitylab/discussions/970"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ning/compress"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/ning/compress/blob/compress-lzf-1.1.3/src/main/java/com/ning/compress/lzf/impl/UnsafeChunkDecoder.java#L104"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ning/compress/commit/06bdc3744a96b736a7118891f403e44c664f108b"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ning/compress/pull/68"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109395"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/ning-compress-lzf-before-1.2.0-out-of-bounds-memory-access-via-unsafechunkdecoder"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Ning compress-lzf before 1.2.0 Out-of-Bounds Memory Access via UnsafeChunkDecoder"
}