{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2.9.3"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "6657afe83a38278f124ace71dc85f60420beb2d5"
            }
          ],
          "repo": "https://github.com/gnome/libxml2",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "2.9.3"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "6657afe83a38278f124ace71dc85f60420beb2d5"
            }
          ],
          "repo": "https://gitlab.gnome.org/gnome/libxml2",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*",
          "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
          "cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*",
          "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "12.04"
          },
          {
            "last_affected": "12.04"
          },
          {
            "introduced": "14.04"
          },
          {
            "last_affected": "14.04"
          },
          {
            "introduced": "15.10"
          },
          {
            "last_affected": "15.10"
          },
          {
            "introduced": "16.04"
          },
          {
            "last_affected": "16.04"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "canonical:ubuntu_linux"
      },
      {
        "cpes": [
          "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "8.0"
          },
          {
            "last_affected": "8.0"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "debian:debian_linux"
      }
    ]
  },
  "details": "XML external entity (XXE) vulnerability in the xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.4, when not in validating mode, allows context-dependent attackers to read arbitrary files or cause a denial of service (resource consumption) via unspecified vectors.",
  "id": "CVE-2016-4449",
  "modified": "2026-08-07T11:31:33.886326969Z",
  "published": "2016-06-09T16:59:07.800Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://jvn.jp/en/jp/JVN17535578/index.html"
    },
    {
      "type": "WEB",
      "url": "http://jvndb.jvn.jp/en/contents/2017/JVNDB-2017-000066.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.apple.com/archives/security-announce/2016/Jul/msg00005.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2016/05/25/2"
    },
    {
      "type": "WEB",
      "url": "http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html"
    },
    {
      "type": "WEB",
      "url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/90865"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1036348"
    },
    {
      "type": "WEB",
      "url": "http://www.slackware.com/security/viewer.php?l=slackware-security\u0026y=2016\u0026m=slackware-security.404722"
    },
    {
      "type": "WEB",
      "url": "http://xmlsoft.org/news.html"
    },
    {
      "type": "WEB",
      "url": "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05194709"
    },
    {
      "type": "WEB",
      "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10170"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/HT206899"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/HT206901"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/HT206902"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/HT206903"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/HT206904"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/HT206905"
    },
    {
      "type": "WEB",
      "url": "https://support.cybozu.com/ja-jp/article/9735"
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/security/tns-2016-18"
    },
    {
      "type": "ADVISORY",
      "url": "http://rhn.redhat.com/errata/RHSA-2016-2957.html"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.ubuntu.com/usn/USN-2994-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2016:1292"
    },
    {
      "type": "ADVISORY",
      "url": "https://git.gnome.org/browse/libxml2/commit/?id=b1d34de46a11323fccffa9fadeb33be670d602f5"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.debian.org/security/2016/dsa-3593"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}