Passing a heavily nested list to sqlparse.parse() leads to a Denial of Service due to RecursionError.

{
  "id": "9412f3568b666274e13a72fe24bb8fb5d60b1b2f77bbb0d64bc18500cba7aced",
  "url": "https://osv.dev/vulnerability/CVE-2024-4340",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Passing a heavily nested list to sqlparse.parse() leads to a Denial of Service due to RecursionError.",
    "summary": "Passing a heavily nested list to sqlparse.parse() leads to a Denial of Service due to RecursionError.",
    "evidence": "osv:CVE-2024-4340",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-4340",
      "aliases": [
        "CVE-2024-4340",
        "GHSA-2m57-hf25-phgg",
        "PYSEC-2026-1940"
      ],
      "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/andialbrecht/sqlparse",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ddbd0ec3592545c914fe71e47118c04582d8bfb0"
                },
                {
                  "fixed": "b4a39d9850969b4e1d6940d32094ee0b42a2cf03"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
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                        "introduced": "0"
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                      {
                        "fixed": "0.5.0"
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                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b4a39d9850969b4e1d6940d32094ee0b42a2cf03"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.4.4",
            "0.4.3",
            "0.4.2",
            "0.4.1",
            "0.4.0",
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            "0.3.0",
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            "0.1.3",
            "0.1.2",
            "0.1.1",
            "0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-4340.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.984153336Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2024/12/msg00022.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/4xxx/CVE-2024-4340.json",
        "https://github.com/advisories/GHSA-2m57-hf25-phgg",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-4340",
        "https://research.jfrog.com/vulnerabilities/sqlparse-stack-exhaustion-dos-jfsa-2024-001031292/",
        "https://github.com/andialbrecht/sqlparse/commit/b4a39d9850969b4e1d6940d32094ee0b42a2cf03",
        "https://pypi.org/project/pip"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-674"
        ],
        "cna_assigner": "JFROG",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/4xxx/CVE-2024-4340.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-4340",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496616,
  "published_at": "2024-04-30T14:23:03.435+00:00"
}