Security advisory

{
  "id": "2118adc41c673973d349c1319e436de89c99659101c88332a1f0a034cc211f71",
  "url": "https://osv.dev/vulnerability/CVE-2021-32821",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-32821",
    "summary": "MooTools is a collection of JavaScript utilities for JavaScript developers. All known versions include a CSS selector parser that is vulnerable to Regular Expression Denial of Service (ReDoS). An attack requires that an attacker can inject a string into a CSS selector at runtime, which is quite common with e.g. jQuery CSS selectors. No patches are available for this issue.",
    "evidence": "osv:CVE-2021-32821",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-32821",
      "aliases": [
        "CVE-2021-32821",
        "GHSA-v63q-hgqc-qvpg"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mootools/mootools-core",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "4501a2979f49156e2375808e1b3cbdb6ecaed849"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mootools:mootools:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.6.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.6.0",
            "1.5.2",
            "1.5.1",
            "1.5.0",
            "1.4.1",
            "1.4.0",
            "1.3.2",
            "1.3.1",
            "1.3",
            "1.2.4",
            "1.2.2",
            "1.2.1",
            "1.2",
            "1.20",
            "1.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32821.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:22.150656647Z",
      "provider": "osv",
      "references": [
        "https://securitylab.github.com/advisories/GHSL-2020-345-redos-mootools/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-32821",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430617,
  "published_at": "2023-01-03T17:15:10.21+00:00"
}