Apache Airflow: ReDoS via dags function

{
  "id": "df3b31beb83f1906eae631f22cb55ae14cfce63612747147fa615d935b83f2d7",
  "url": "https://osv.dev/vulnerability/CVE-2023-36543",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Airflow: ReDoS via dags function",
    "summary": "Apache Airflow, versions before 2.6.3, has a vulnerability where an authenticated user can use crafted input to make the current request hang. It is recommended to upgrade to a version that is not affected",
    "evidence": "osv:CVE-2023-36543",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-36543",
      "aliases": [
        "BIT-airflow-2023-36543",
        "CVE-2023-36543",
        "GHSA-3h4m-m55v-gx4m",
        "PYSEC-2023-106"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/airflow",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e514f908c8f943e5bc922b0f1674879fbbd2eeb3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.6.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.6.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "constraints-2.6.3rc1",
            "constraints-2.6.2rc2",
            "constraints-2.6.1rc3",
            "constraints-2.6.0rc5",
            "constraints-2.6.2rc1",
            "constraints-2.6.1rc2",
            "constraints-2.6.1rc1",
            "constraints-2.6.0rc4",
            "constraints-2.6.0rc3",
            "constraints-2.6.0rc2",
            "constraints-2.6.0rc1",
            "constraints-2.6.0b1",
            "constraints-2.4.0b1",
            "constraints-2.3.0rc2",
            "constraints-2.3.0rc1",
            "constraints-2-3",
            "constraints-2.3.0b1",
            "constraints-2.2.0rc1",
            "constraints-2.2.0b2",
            "constraints-2.2.0b1",
            "constraints-2.1.0rc1",
            "constraints-2.0.1rc1",
            "constraints-2.0.0rc3",
            "constraints-2.0.0rc2",
            "constraints-2.0.0rc1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-36543.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.430045937Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/36xxx/CVE-2023-36543.json",
        "https://lists.apache.org/thread/tokfs980504ylgk3cv3hjlnrtbv4tng4",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-36543",
        "https://github.com/apache/airflow/pull/32060"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1333"
        ],
        "cna_assigner": "apache",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/36xxx/CVE-2023-36543.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-36543",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 490946,
  "published_at": "2023-07-12T09:17:33.707+00:00"
}