Security advisory

{
  "id": "833de529084fc55c34f421cbc1120e283dcada90fe8545bdf20ea3bcc1f846f7",
  "url": "https://osv.dev/vulnerability/CVE-2023-39663",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-39663",
    "summary": "Mathjax up to v2.7.9 was discovered to contain two Regular expression Denial of Service (ReDoS) vulnerabilities in MathJax.js via the components pattern and markdownPattern. NOTE: the vendor disputes this because the regular expressions are not applied to user input; thus, there is no risk.",
    "evidence": "osv:CVE-2023-39663",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-39663",
      "aliases": [
        "CVE-2023-39663",
        "GHSA-v638-q856-grg8"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mathjax/mathjax",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "3b461438246adfcf67690795fcc0ae6dc4e335fe"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.7.9"
                      }
                    ],
                    "source": "DESCRIPTION"
                  },
                  {
                    "cpe": "cpe:2.3:a:mathjax:mathjax:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.7.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.7.9",
            "2.7.8",
            "2.7.7",
            "2.7.6",
            "2.7.5",
            "2.7.4",
            "2.7.3",
            "2.7.2",
            "2.7.2-beta.1",
            "2.7.2-beta.0",
            "2.7.1",
            "2.7.0",
            "2.6.1",
            "2.6.0",
            "2.5.3",
            "2.5.2",
            "2.5.1",
            "2.5.0",
            "2.4.0",
            "2.2.0",
            "2.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-39663.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.653764056Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39663.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-39663",
        "https://github.com/mathjax/MathJax/issues/3074"
      ],
      "provider_metadata": {
        "isDisputed": true,
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39663.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-39663",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 507056,
  "published_at": "2023-08-29T00:00:00+00:00"
}