USN-8460-1 (UBUNTU-CVE-2026-1757)

Vulnerability from osv_ubuntu – Published: 2026-06-22 17:10 – Updated: 2026-06-22 17:10 – Source website
VLAI
Summary
libxml2 vulnerabilities
Details

It was discovered that libxml2 did not properly release memory allocated in the xmllint utility. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-1757)

A type confusion vulnerability was found in libxml2 when processing a specially crafted XML document. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-6732)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-1757",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-6732",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libxml2-16",
            "binary_version": "2.14.5+dfsg-0.2ubuntu0.2"
          },
          {
            "binary_name": "libxml2-utils",
            "binary_version": "2.14.5+dfsg-0.2ubuntu0.2"
          },
          {
            "binary_name": "python3-libxml2",
            "binary_version": "2.14.5+dfsg-0.2ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.14.5+dfsg-0.2ubuntu0.2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.14.5+dfsg-0.2ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.12.7+dfsg+really2.9.14-0.4",
        "2.12.7+dfsg+really2.9.14-0.4ubuntu0.1",
        "2.12.7+dfsg+really2.9.14-1",
        "2.14.3+dfsg-0exp1",
        "2.14.3+dfsg-0exp2",
        "2.14.3+dfsg-0exp3",
        "2.14.4+dfsg-0exp1",
        "2.14.5+dfsg-0exp1",
        "2.14.5+dfsg-0exp2",
        "2.14.5+dfsg-0.1",
        "2.14.5+dfsg-0.2",
        "2.14.5+dfsg-0.2ubuntu0.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-6732",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libxml2-16",
            "binary_version": "2.15.2+dfsg-0.1ubuntu0.1"
          },
          {
            "binary_name": "libxml2-source",
            "binary_version": "2.15.2+dfsg-0.1ubuntu0.1"
          },
          {
            "binary_name": "libxml2-utils",
            "binary_version": "2.15.2+dfsg-0.1ubuntu0.1"
          },
          {
            "binary_name": "python3-libxml2",
            "binary_version": "2.15.2+dfsg-0.1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libxml2",
        "purl": "pkg:deb/ubuntu/libxml2@2.15.2+dfsg-0.1ubuntu0.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.15.2+dfsg-0.1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.14.5+dfsg-0.2",
        "2.14.5+dfsg-0.2build1",
        "2.15.1+dfsg-0.3",
        "2.15.1+dfsg-0.4",
        "2.15.1+dfsg-1",
        "2.15.1+dfsg-2",
        "2.15.1+dfsg-2ubuntu1",
        "2.15.1+dfsg-2ubuntu2",
        "2.15.2+dfsg-0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that libxml2 did not properly release memory allocated in\nthe xmllint utility. An attacker could possibly use this issue to cause a\ndenial of service. (CVE-2026-1757)\n\nA type confusion vulnerability was found in libxml2 when processing a\nspecially crafted XML document. A remote attacker could possibly use this\nissue to cause a denial of service. (CVE-2026-6732)",
  "id": "USN-8460-1",
  "modified": "2026-06-22T17:10:23Z",
  "published": "2026-06-22T17:10:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8460-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-1757"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-6732"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libxml2 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-1757",
    "UBUNTU-CVE-2026-6732"
  ]
}



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