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CVE-2026-46374— SQLFluff: Uncontrolled Resource Consumption in Parser

Quick assessment

Affected
sqlfluff sqlfluff
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SQLFluff是SQLFluff开源的一种方言灵活且可配置的 SQL linter。 SQLFluff 4.2.0之前版本存在资源管理错误漏洞，该漏洞源于解析器对恶意长SQL查询处理不当，可能导致资源耗尽拒绝服务。

CVSS 7.5 · High EPSS 0.26% · P18

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
sqlfluff sqlfluff < 4.2.0 affected
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I. Basic Information for CVE-2026-46374

Vulnerability Information
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Vulnerability Title
SQLFluff: Uncontrolled Resource Consumption in Parser
Source: CVE Program / CVE List V5
Vulnerability Description
SQLFluff is a modular SQL linter and auto-formatter with support for multiple dialects and templated code. Prior to version 4.2.0, in deployments where untrusted users can provide SQL queries to be linted, an untrusted user can submit a malicious long query to any application using the parser to trigger a Denial of Service through resource exhaustion. This issue has been patched in version 4.2.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
SQLFluff 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SQLFluff是SQLFluff开源的一种方言灵活且可配置的 SQL linter。 SQLFluff 4.2.0之前版本存在资源管理错误漏洞，该漏洞源于解析器对恶意长SQL查询处理不当，可能导致资源耗尽拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
sqlfluff sqlfluff < 4.2.0 -

II. Public POCs for CVE-2026-46374

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 7911 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-46374

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Vendor Advisories for CVE-2026-46374 (1)

IV. Related Vulnerabilities

Same product: sqlfluff
Same vendor: sqlfluff
Same weakness: CWE-400