Security advisory

{
  "id": "dd9d75ac1d1309fd6f93ecb52e5aca5d95a88baaa32f46ab08988119637c338e",
  "url": "https://osv.dev/vulnerability/CVE-2021-25952",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-25952",
    "summary": "Prototype pollution vulnerability in ‘just-safe-set’ versions 1.0.0 through 2.2.1 allows an attacker to cause a denial of service and may lead to remote code execution.",
    "evidence": "osv:CVE-2021-25952",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-25952",
      "aliases": [
        "CVE-2021-25952",
        "GHSA-v26w-gcxh-v4r7"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/angus-c/just",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4edca9d892a2c2b9d58b93f492f1c2c578efafa7"
                },
                {
                  "last_affected": "4119cd4ff6216fa28b3bbaa8ca5c0e6e74fa65ba"
                },
                {
                  "fixed": "dd57a476f4bb9d78c6f60741898dc04c71d2eb53"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:just-safe-set_project:just-safe-set:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "last_affected": "2.2.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "dd57a476f4bb9d78c6f60741898dc04c71d2eb53"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "just-unique@2.0.3",
            "just-union@1.1.22",
            "just-typeof@1.0.4",
            "just-template@1.1.20",
            "just-remove@1.1.21",
            "just-reduce-object@1.0.2",
            "just-pluck-it@1.1.20",
            "just-pick@1.0.2",
            "just-partial-it@1.1.22",
            "just-map-object@1.1.20",
            "just-last@1.1.22",
            "just-intersect@1.1.21",
            "just-flatten-it@1.1.23",
            "just-filter-object@1.1.21",
            "just-extend@1.1.20",
            "just-curry-it@1.1.21",
            "just-compose@1.0.5",
            "just-compare@1.1.20",
            "just-unique@2.0.2",
            "just-union@1.1.20",
            "just-typeof@1.0.3",
            "just-template@1.1.19",
            "just-remove@1.1.20",
            "just-reduce-object@1.0.1",
            "just-pluck-it@1.1.19",
            "just-partial-it@1.1.21",
            "just-map-object@1.1.19",
            "just-last@1.1.20",
            "just-intersect@1.1.20",
            "just-flip-object@1.0.1",
            "just-flatten-it@1.1.21",
            "just-filter-object@1.1.20",
            "just-extend@1.1.19",
            "just-curry-it@1.1.20",
            "just-compose@1.0.4",
            "just-compare@1.1.19",
            "just-unique@1.1.17",
            "just-union@1.1.17",
            "just-remove@1.1.17",
            "just-pluck-it@1.1.17",
            "just-partial-it@1.1.17",
            "just-last@1.1.17",
            "just-intersect@1.1.17",
            "just-flatten-it@1.1.17",
            "just-filter@1.1.17",
            "just-extend@1.1.17",
            "just-curry-it@1.1.17",
            "just-compose@1.0.3",
            "just-compare@1.1.17",
            "just-pluck-it@1.1.9",
            "just-function-partial@1.1.9",
            "just-function-curry@1.1.9",
            "just-filter@1.1.9",
            "just-extend@1.1.9",
            "just-compare@1.1.9",
            "just-array-unique@1.1.9",
            "just-array-union@1.1.9",
            "just-array-remove@1.1.9",
            "just-array-last@1.1.9",
            "just-array-intersect@1.1.9",
            "just-array-flatten@1.1.9",
            "just-pluck-it@1.1.8",
            "just-function-partial@1.1.8",
            "just-function-curry@1.1.8",
            "just-filter@1.1.8",
            "just-extend@1.1.8",
            "just-compare@1.1.8",
            "just-array-unique@1.1.8",
            "just-array-union@1.1.8",
            "just-array-remove@1.1.8",
            "just-array-last@1.1.8",
            "just-array-intersect@1.1.8",
            "just-array-flatten@1.1.8",
            "v1.1.6",
            "v1.1.5",
            "v1.1.4",
            "v1.1.3",
            "v1.1.2",
            "v1.1.1",
            "v1.1.0",
            "just-pluck-it@1.0.0",
            "just-flatten@1.0.0",
            "just-extend@1.0.0",
            "just-compare@1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25952.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:34.611755748Z",
      "provider": "osv",
      "references": [
        "https://github.com/angus-c/just/commit/dd57a476f4bb9d78c6f60741898dc04c71d2eb53",
        "https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25952"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-25952",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385630,
  "published_at": "2021-07-07T12:15:08.573+00:00"
}