SQLFluff: Recursive Stack Overflow in Parser
CVE-2026-46373

7.5HIGH

Key Information:

Vendor

Sqlfluff

Status
Sqlfluff
Vendor
CVE Published:
9 June 2026

What is CVE-2026-46373?

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.

Affected Version(s)

sqlfluff < 4.1.0

References

https://github.com/sqlfluff/sqlfluff/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.