libxml2 — security advisory

{
  "id": "51a2421db0bea36914f4723179d3a043ef3132440cd6a77d04746602a800dd91",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-86144",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-86144",
    "summary": "In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).",
    "evidence": "osv:UBUNTU-CVE-2026-86144",
    "products": [
      {
        "name": {
          "value": "libxml2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm13",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.9.1+dfsg1-3ubuntu2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.5",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.7",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.8",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.9",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.10",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.11",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.12",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm5",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm7",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm8",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm9",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm10",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm11",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.9.1+dfsg1-3ubuntu4.13+esm12",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libxml2",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm14",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.9.2+zdfsg1-4",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.2+zdfsg1-4ubuntu1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.2+zdfsg1-4ubuntu2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.2+zdfsg1-4ubuntu3",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.3",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.4",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.5",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.6",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm3",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm4",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm5",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm6",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm7",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm8",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm9",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm10",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm11",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm12",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2.9.3+dfsg1-1ubuntu0.7+esm13",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libxml2",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm9",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.9.4+dfsg1-4ubuntu1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-5ubuntu1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-5ubuntu2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-5.1ubuntu1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-5.2ubuntu1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.4",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.5",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.6",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.7",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.8",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm4",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm5",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm6",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm7",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2.9.4+dfsg1-6.1ubuntu1.9+esm8",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libxml2",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.10+esm6",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.9.4+dfsg1-7ubuntu3",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.4+dfsg1-7ubuntu5",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.4+dfsg1-8ubuntu1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.4+dfsg1-8ubuntu2",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.4+dfsg1-8ubuntu3",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-1ubuntu3",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-4build1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.2",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.3",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.4",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.5",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.6",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.7",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.8",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.9",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.10",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.10+esm1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.10+esm2",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.10+esm3",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.10+esm4",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "2.9.10+dfsg-5ubuntu0.20.04.10+esm5",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libxml2",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.9.13+dfsg-1ubuntu0.14",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.9.12+dfsg-4",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.12+dfsg-5",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.12+dfsg-6",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1build1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.2",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.3",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.4",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.5",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.6",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.7",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.8",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.9",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.10",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.11",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.12",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "2.9.13+dfsg-1ubuntu0.13",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libxml2",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.10",
            "evidence": "/affected/5/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.9.14+dfsg-1.3",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3build1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3build2",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3build3",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu2",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.2",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.3",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.4",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.5",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.6",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.7",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.8",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "2.9.14+dfsg-1.3ubuntu3.9",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libxml2",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.15.2+dfsg-0.1ubuntu0.3",
            "evidence": "/affected/6/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.14.5+dfsg-0.2",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.14.5+dfsg-0.2build1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.1+dfsg-0.3",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.1+dfsg-0.4",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.1+dfsg-1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.1+dfsg-2",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.1+dfsg-2ubuntu1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.1+dfsg-2ubuntu2",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.2+dfsg-0.1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.2+dfsg-0.1ubuntu0.1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.15.2+dfsg-0.1ubuntu0.2",
            "evidence": "/affected/6/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2026-86144",
      "aliases": [
        "UBUNTU-CVE-2026-86144"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L"
        },
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.9.1+dfsg1-3ubuntu4.13+esm13"
                }
              ]
            }
          ],
          "package": {
            "name": "libxml2",
            "purl": "pkg:deb/ubuntu/libxml2?arch=source&distro=esm-infra-legacy%2Ftrusty",
            "ecosystem": "Ubuntu:Pro:14.04:LTS"
          },
          "versions": [
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      "modified": "2026-10-09T07:45:02.965508845Z",
      "provider": "osv",
      "upstream": [
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      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-86144",
        "https://www.cve.org/CVERecord?id=CVE-2026-86144",
        "https://ubuntu.com/security/notices/USN-8910-1"
      ]
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      {
        "value": "CVE-2026-86144",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/1/score"
  },
  "source_id": "core-osv",
  "document_id": 108949,
  "published_at": "2026-09-05T05:17:00+00:00"
}