CVE-2026-46373: SQLFluff: Recursive Stack Overflow in Parser

May 19, 2026 (updated July 6, 2026)

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.

References

github.com/advisories/GHSA-wmhf-fqc8-vxhh
github.com/pypa/advisory-database/tree/main/vulns/sqlfluff/PYSEC-2026-209.yaml
github.com/sqlfluff/sqlfluff/security/advisories/GHSA-wmhf-fqc8-vxhh
nvd.nist.gov/vuln/detail/CVE-2026-46373

Code Behaviors & Features

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