ubuntu-cve-2025-64718
Vulnerability from osv_ubuntu
Published
2025-11-13 16:15
Modified
2026-05-20 15:22
Summary
Details

js-yaml is a JavaScript YAML parser and dumper. In js-yaml before 4.1.1 and 3.14.2, it's possible for an attacker to modify the prototype of the result of a parsed yaml document via prototype pollution (__proto__). All users who parse untrusted yaml documents may be impacted. The problem is patched in js-yaml 4.1.1 and 3.14.2. Users can protect against this kind of attack on the server by using node --disable-proto=delete or deno (in Deno, pollution protection is on by default).

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-js-yaml",
            "binary_version": "3.10.0+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "node-js-yaml",
        "purl": "pkg:deb/ubuntu/node-js-yaml@3.10.0+dfsg-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.9.1+dfsg-1",
        "3.10.0+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-js-yaml",
            "binary_version": "3.13.1+dfsg-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "node-js-yaml",
        "purl": "pkg:deb/ubuntu/node-js-yaml@3.13.1+dfsg-2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.13.1+dfsg-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-js-yaml",
            "binary_version": "4.1.0+dfsg+~4.0.5-6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "node-js-yaml",
        "purl": "pkg:deb/ubuntu/node-js-yaml@4.1.0+dfsg+~4.0.5-6?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.14.1+dfsg+~3.12.6-2",
        "4.1.0+dfsg+~4.0.5-4ubuntu1",
        "4.1.0+dfsg+~4.0.5-5",
        "4.1.0+dfsg+~4.0.5-6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-js-yaml",
            "binary_version": "4.1.0+dfsg+~4.0.5-7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "node-js-yaml",
        "purl": "pkg:deb/ubuntu/node-js-yaml@4.1.0+dfsg+~4.0.5-7?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.0+dfsg+~4.0.5-7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-js-yaml",
            "binary_version": "4.1.0+dfsg+~4.0.5-7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "node-js-yaml",
        "purl": "pkg:deb/ubuntu/node-js-yaml@4.1.0+dfsg+~4.0.5-7?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.0+dfsg+~4.0.5-7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-js-yaml",
            "binary_version": "4.1.1+dfsg+~4.0.9-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "node-js-yaml",
        "purl": "pkg:deb/ubuntu/node-js-yaml@4.1.1+dfsg+~4.0.9-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.0+dfsg+~4.0.5-7",
        "4.1.1+dfsg+~4.0.9-1"
      ]
    }
  ],
  "aliases": [],
  "details": "js-yaml is a JavaScript YAML parser and dumper. In js-yaml before 4.1.1 and 3.14.2, it\u0027s possible for an attacker to modify the prototype of the result of a parsed yaml document via prototype pollution (`__proto__`). All users who parse untrusted yaml documents may be impacted. The problem is patched in js-yaml 4.1.1 and 3.14.2. Users can protect against this kind of attack on the server by using `node --disable-proto=delete` or `deno` (in Deno, pollution protection is on by default).",
  "id": "UBUNTU-CVE-2025-64718",
  "modified": "2026-05-20T15:22:58Z",
  "published": "2025-11-13T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-64718"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-64718"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nodeca/js-yaml/security/advisories/GHSA-mh29-5h37-fv8m"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nodeca/js-yaml/commit/383665ff4248ec2192d1274e934462bb30426879"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-64718"
  ]
}



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