python-sqlparse security update

{
  "id": "aeeb3a1ee3337ea95d1601546c3fdc53b6c56a46fb90e2c6e537893a56b8343b",
  "url": "https://osv.dev/vulnerability/OESA-2026-4320",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "python-sqlparse security update",
    "summary": "A non-validating SQL parser. Security Fix(es): sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, sqlparse/filters/output.py fails to escape existing backslashes before quotes in sqlparse.format output_format='python' and output_format='php' and the corresponding sqlformat -l modes, allowing crafted SQL to terminate the generated string and inject Python or PHP code when a downstream consumer executes or imports the generated source. This issue is fixed in version 0.6.0.(CVE-2026-59894) sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, sqlparse.format(sql, reindent=True) and sqlformat --reindent route attacker-controlled parenthesized tuple lists through ReindentFilter._get_offset() in sqlparse/filters/reindent.py, where _flatten_up_to_token() repeatedly rebuilds and joins the statement prefix. Thousands of offset calculations walk an expanding token tree, producing quadratic CPU consumption for inputs that remain below MAX_GROUPING_TOKENS and causing request delays, reduced throughput, or worker starvation. This issue is fixed in version 0.6.0.(CVE-2026-84305)",
    "evidence": "osv:OESA-2026-4320",
    "products": [
      {
        "name": {
          "value": "python-sqlparse",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.4.4-4.oe2403sp1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "OESA-2026-4320",
      "aliases": [
        "OESA-2026-4320"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.4.4-4.oe2403sp1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-sqlparse",
            "purl": "pkg:rpm/openEuler/python-sqlparse&distro=openEuler-24.03-LTS-SP1",
            "ecosystem": "openEuler:24.03-LTS-SP1"
          },
          "database_specific": {
            "source": "https://repo.openeuler.org/security/data/osv/OESA-2026-4320.json"
          },
          "ecosystem_specific": {
            "src": [
              "python-sqlparse-0.4.4-4.oe2403sp1.src.rpm"
            ],
            "noarch": [
              "python3-sqlparse-0.4.4-4.oe2403sp1.noarch.rpm"
            ]
          }
        }
      ],
      "modified": "2026-10-16T12:15:09.077348048Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-59894",
        "CVE-2026-84305"
      ],
      "references": [
        "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4320",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-59894",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-84305"
      ],
      "provider_metadata": {
        "severity": "Medium"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-59894",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-84305",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 340799,
  "published_at": "2026-10-16T11:59:19+00:00"
}