CVE-2026-46373

SQLFluff: Recursive Stack Overflow in Parser

State: Published
Severity: 7.5 High
Published: Jun 9, 2026
Updated: Jun 10, 2026
Reserved: May 13, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-674 Uncontrolled Recursion

Affected Products

Product	Versions
sqlfluffsqlfluff	< 4.1.0Affected

References

https://github.com/sqlfluff/sqlfluff/security/advisories/GHSA-wmhf-fqc8-vxhh

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