{"id":"PYSEC-2026-209","details":"SQLFluff is a modular SQL linter and auto-formatter with support for multiple dialects and templated code. Prior to version 4.1.0, in deployments where untrusted users can provide SQL queries to be linted, an untrusted user can submit a malicious query with deliberate excessive nesting to any application using the parser to trigger a Denial of Service through resource exhaustion. This issue has been patched in version 4.1.0.","aliases":["CVE-2026-46373","GHSA-wmhf-fqc8-vxhh"],"modified":"2026-06-13T10:45:05.237886410Z","published":"2026-06-09T23:16:59.167Z","references":[{"type":"ADVISORY","url":"https://github.com/sqlfluff/sqlfluff/security/advisories/GHSA-wmhf-fqc8-vxhh"}],"affected":[{"package":{"name":"sqlfluff","ecosystem":"PyPI","purl":"pkg:pypi/sqlfluff"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0"}]}],"versions":["0.0.1","0.0.2","0.0.3","0.0.4","0.0.5","0.0.6","0.0.7","0.0.9","0.1.0","0.1.1","0.1.2","0.1.3","0.1.4","0.1.5","0.10.0","0.10.1","0.11.0","0.11.1","0.11.2","0.12.0","0.13.0","0.13.1","0.13.2","0.2.0","0.2.1","0.2.2","0.2.3","0.2.4","0.3.0","0.3.1","0.3.2","0.3.2.post1","0.3.2.post2","0.3.3","0.3.4","0.3.5","0.3.6","0.4.0","0.4.0a1","0.4.0a2","0.4.0a3","0.4.1","0.5.0","0.5.1","0.5.2","0.5.3","0.5.4","0.5.5","0.5.6","0.6.0","0.6.0a1","0.6.0a2","0.6.1","0.6.2","0.6.3","0.6.4","0.6.5","0.6.6","0.6.7","0.6.8","0.6.9","0.7.0","0.7.0a1","0.7.0a2","0.7.0a3","0.7.0a5","0.7.0a8","0.7.1","0.8.0","0.8.1","0.8.2","0.9.0","0.9.1","0.9.2","0.9.3","0.9.4","1.0.0","1.1.0","1.2.0","1.2.1","1.3.0","1.3.1","1.3.2","1.4.0","1.4.1","1.4.2","1.4.3","1.4.4","1.4.5","2.0.0","2.0.0a1","2.0.0a2","2.0.0a3","2.0.0a4","2.0.0a5","2.0.0a6","2.0.1","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.1.0","2.1.1","2.1.2","2.1.3","2.1.4","2.2.0","2.2.1","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","3.0.0","3.0.0a1","3.0.0a2","3.0.0a3","3.0.0a4","3.0.0a5","3.0.0a6","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.1.0","3.1.1","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.3.0","3.3.1","3.4.0","3.4.1","3.4.2","3.5.0","4.0.0","4.0.0a1","4.0.0a2","4.0.0a3","4.0.1.post1","4.0.3","4.0.4","4.0.4a1"],"ecosystem_specific":{},"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/sqlfluff/PYSEC-2026-209.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}