TI-2026-34090 Aliases CVE-2026-46373 GHSA-wmhf-fqc8-vxhh

SQLFluff: Recursive Stack Overflow in Parser

LOW 38CWE-674Published 2026-06-09 · Updated 2026-06-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-674.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00263 18th percentileScored 2026-11-07

Fix Fixed sqlfluff (sqlfluff): 4.1.0sqlfluff (PyPI): 4.1.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
sqlfluff	sqlfluff	before 4.1.0	4.1.0	Patch available	CNA
—	sqlfluff (PyPI)	before 4.1.0	4.1.0	Patch available	GHSA-wmhf-fqc8-vxhh

sqlfluff Vendorsqlfluff Affected before 4.1.0 Fixed in 4.1.0 Patch available CNA
sqlfluff (PyPI) Vendor— Affected before 4.1.0 Fixed in 4.1.0 Patch available GHSA-wmhf-fqc8-vxhh

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:sqlfluff:sqlfluff::::::::	before 4.1.0	Vulnerable	sqlfluff

cpe:2.3:a:sqlfluff:sqlfluff:*:*:*:*:*:*:*:* Versions before 4.1.0 Vulnerable ·sqlfluff

Remediation

Fix · CNA sqlfluff (sqlfluff) Fixed in 4.1.0
Fix · GHSA-wmhf-fqc8-vxhh sqlfluff (PyPI) Fixed in 4.1.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-46373
2026-10-03 Alias added: GHSA-wmhf-fqc8-vxhh

References

Advisory 2

Other 2

TI-2026-34091 SQLFluff: Uncontrolled Resource Consumption in Parser CVSS 3.1HIGH 7.5
TI-2023-18624 SQLFluff vulnerability for users with access to config file, using `library_path` to call arbitrary python code. CVSS 3.1HIGH 7.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences