Security advisory

{
  "id": "6ce2ff2a1c896d9d75fd90c18d2407502cc1ee6dc18f1673c2e81c80262acfe3",
  "url": "https://osv.dev/vulnerability/CVE-2021-28860",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-28860",
    "summary": "In Node.js mixme, prior to v0.5.1, an attacker can add or alter properties of an object via '__proto__' through the mutate() and merge() functions. The polluted attribute will be directly assigned to every object in the program. This will put the availability of the program at risk causing a potential denial of service (DoS).",
    "evidence": "osv:CVE-2021-28860",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-28860",
      "aliases": [
        "CVE-2021-28860",
        "CVE-2021-29491",
        "GHSA-79jw-6wg7-r9g4",
        "GHSA-r5cq-9537-9rpf"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/adaltas/node-mixme",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0ae91325065dd8693eb457492c210ff9a3fa6f7b"
                },
                {
                  "fixed": "cfd5fbfc32368bcf7e06d1c5985ea60e34cd4028"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:adaltas:mixme:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.5.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "cfd5fbfc32368bcf7e06d1c5985ea60e34cd4028"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.5.0",
            "v0.4.0",
            "v0.3.5",
            "v0.3.3",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.0",
            "v0.1.0",
            "v0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-28860.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:36.764963227Z",
      "provider": "osv",
      "references": [
        "https://security.netapp.com/advisory/ntap-20210618-0005/",
        "https://www.npmjs.com/~david",
        "https://github.com/adaltas/node-mixme/issues/1",
        "https://github.com/adaltas/node-mixme/commit/cfd5fbfc32368bcf7e06d1c5985ea60e34cd4028",
        "https://github.com/adaltas/node-mixme/security/advisories/GHSA-79jw-6wg7-r9g4"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-28860",
        "evidence": "/id"
      },
      {
        "value": "CVE-2021-29491",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385729,
  "published_at": "2021-05-03T12:15:07.467+00:00"
}