ubuntu-cve-2026-8177
Vulnerability from osv_ubuntu
Published
2026-05-10 21:16
Modified
2026-06-30 16:18
Summary
Details

XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences. A node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory. Any Perl process that passes attacker controlled strings to XML::LibXML's DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml-libxml-perl",
            "binary_version": "2.0123+dfsg-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libxml-libxml-perl",
        "purl": "pkg:deb/ubuntu/libxml-libxml-perl@2.0123+dfsg-1ubuntu0.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0116+dfsg-5",
        "2.0122+dfsg-1",
        "2.0123+dfsg-1",
        "2.0123+dfsg-1build1",
        "2.0123+dfsg-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml-libxml-perl",
            "binary_version": "2.0128+dfsg-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libxml-libxml-perl",
        "purl": "pkg:deb/ubuntu/libxml-libxml-perl@2.0128+dfsg-5?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0128+dfsg-3",
        "2.0128+dfsg-5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml-libxml-perl",
            "binary_version": "2.0134+dfsg-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libxml-libxml-perl",
        "purl": "pkg:deb/ubuntu/libxml-libxml-perl@2.0134+dfsg-1build1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0134+dfsg-1",
        "2.0134+dfsg-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml-libxml-perl",
            "binary_version": "2.0207+dfsg+really+2.0134-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libxml-libxml-perl",
        "purl": "pkg:deb/ubuntu/libxml-libxml-perl@2.0207+dfsg+really+2.0134-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0134+dfsg-2build1",
        "2.0134+dfsg-2build2",
        "2.0207+dfsg-2",
        "2.0207+dfsg+really+2.0134-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml-libxml-perl",
            "binary_version": "2.0207+dfsg+really+2.0134-1build4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libxml-libxml-perl",
        "purl": "pkg:deb/ubuntu/libxml-libxml-perl@2.0207+dfsg+really+2.0134-1build4?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0207+dfsg+really+2.0134-1build1",
        "2.0207+dfsg+really+2.0134-1build2",
        "2.0207+dfsg+really+2.0134-1build3",
        "2.0207+dfsg+really+2.0134-1build4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml-libxml-perl",
            "binary_version": "2.0207+dfsg+really+2.0207-0ubuntu6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libxml-libxml-perl",
        "purl": "pkg:deb/ubuntu/libxml-libxml-perl@2.0207+dfsg+really+2.0207-0ubuntu6?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0207+dfsg+really+2.0134-5build1",
        "2.0207+dfsg+really+2.0207-0ubuntu4",
        "2.0207+dfsg+really+2.0207-0ubuntu5",
        "2.0207+dfsg+really+2.0207-0ubuntu6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxml-libxml-perl",
            "binary_version": "2.0207+dfsg+really+2.0207-0ubuntu7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libxml-libxml-perl",
        "purl": "pkg:deb/ubuntu/libxml-libxml-perl@2.0207+dfsg+really+2.0207-0ubuntu7?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0207+dfsg+really+2.0207-0ubuntu6",
        "2.0207+dfsg+really+2.0207-0ubuntu7"
      ]
    }
  ],
  "aliases": [],
  "details": "XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences. A node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory. Any Perl process that passes attacker controlled strings to XML::LibXML\u0027s DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.",
  "id": "UBUNTU-CVE-2026-8177",
  "modified": "2026-06-30T16:18:39Z",
  "published": "2026-05-10T21:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-8177"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-8177"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/39920366/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cpan-authors/XML-LibXML/issues/146"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cpan-authors/XML-LibXML/pull/149"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/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"
    }
  ],
  "upstream": [
    "CVE-2026-8177"
  ]
}



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