{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.9.11"
              },
              {
                "last_affected": "2.11.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "e1bcffea180d6cc0651757bb64284a763e0e2239"
            },
            {
              "last_affected": "f296934ade688baab79caf1c62a82149ad78accf"
            }
          ],
          "repo": "https://github.com/gnome/libxml2",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.9.11"
              },
              {
                "fixed": "2.11.0"
              },
              {
                "last_affected": "2.11.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "e1bcffea180d6cc0651757bb64284a763e0e2239"
            },
            {
              "fixed": "f296934ade688baab79caf1c62a82149ad78accf"
            }
          ],
          "repo": "https://gitlab.gnome.org/gnome/libxml2",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "canonical",
    "cwe_ids": [
      "CWE-416",
      "CWE-611"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6653.json"
  },
  "details": "Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.",
  "id": "CVE-2026-6653",
  "modified": "2026-08-12T03:51:22.205414967Z",
  "published": "2026-06-22T12:40:31.424Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6653.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6653"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058"
    },
    {
      "type": "PACKAGE",
      "url": "https://gitlab.gnome.org/GNOME/libxml2"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling"
}