Security advisory

{
  "id": "2014664275d8013adce28cf240fdcd64f03033942293db3062154b67b0c3acd9",
  "url": "https://osv.dev/vulnerability/CVE-2019-20922",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-20922",
    "summary": "Handlebars before 4.4.5 allows Regular Expression Denial of Service (ReDoS) because of eager matching. The parser may be forced into an endless loop while processing crafted templates. This may allow attackers to exhaust system resources.",
    "evidence": "osv:CVE-2019-20922",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-20922",
      "aliases": [
        "CVE-2019-20922",
        "GHSA-62gr-4qp9-h98f",
        "SNYK-JS-HANDLEBARS-480388"
      ],
      "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/handlebars-lang/handlebars.js",
              "type": "GIT",
              "events": [
                {
                  "introduced": "bff5fab8f9d42e21950be00dcf1cedf4dc1a565b"
                },
                {
                  "fixed": "8e1cce79186ab6caeb8c6ec9c1f8bcfa1a40e83d"
                },
                {
                  "fixed": "8d5530ee2c3ea9f0aee3fde310b9f36887d00b8b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:handlebarsjs:handlebars:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.4.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8d5530ee2c3ea9f0aee3fde310b9f36887d00b8b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.4.4",
            "v4.4.3",
            "v4.4.2",
            "v4.4.1",
            "v4.2.1",
            "v4.3.4",
            "v4.4.0",
            "v4.3.3",
            "v4.3.2",
            "v4.3.1",
            "v4.3.0",
            "v4.2.0",
            "v4.1.2-0",
            "v4.1.2",
            "v4.1.1",
            "v4.0.12",
            "v4.0.11",
            "v4.0.10",
            "v4.0.9",
            "v4.0.8",
            "v4.0.7",
            "v4.0.6",
            "v4.0.5",
            "v4.0.4",
            "v4.0.3",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20922.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:40.802337628Z",
      "provider": "osv",
      "references": [
        "https://snyk.io/vuln/SNYK-JS-HANDLEBARS-480388",
        "https://www.npmjs.com/advisories/1300",
        "https://github.com/handlebars-lang/handlebars.js/commit/8d5530ee2c3ea9f0aee3fde310b9f36887d00b8b"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-20922",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383734,
  "published_at": "2020-09-30T18:15:18.1+00:00"
}