CVE-2026-46373
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSqlfluff
PublishedJun 9, 2026
First seenJun 9, 2026
Weakness typeCWE-674CWE-674
How to fix
Update
- sqlfluff sqlfluff4.1.0 or later
- sqlfluff4.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sqlfluff sqlfluff | v < 4.1.0 | 4.1.0 |
| sqlfluffPyPI | v < 4.1.0 | 4.1.0 |
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