PT-2026-42042 · Pypi · Sqlfluff

Published 2026-05-19 · Updated 2026-05-19 · CVE-2026-46373

OSV

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact

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.

Patches

Versions 4.1.0 and up contain a configurable recursion limit, which is enabled by default, to prevent this manner of exploit.

Credit

Ori Nakar from Imperva Threat Research Team.

Fix

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

CVE-2026-46373

GHSA-WMHF-FQC8-VXHH

Affected Products

Sqlfluff

References · 3

• https://osv.dev/vulnerability/GHSA-wmhf-fqc8-vxhh · Vendor Advisory
• https://github.com/sqlfluff/sqlfluff · Note
• https://github.com/sqlfluff/sqlfluff/security/advisories/GHSA-wmhf-fqc8-vxhh · Note