CVE-2026-54284

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, TokenList construction and string conversion in sqlparse/sql.py repeatedly flatten nested token subtrees constructed by group_parenthesis and group_case, causing quadratic CPU consumption through sqlparse.parse(), sqlparse.format(), and sqlparse.split() before depth and token limits terminate processing. This issue is fixed in version 0.6.0.

Affected products

Sqlparse

CVSS 4.0

8.7 HIGH

Weakness

CWE-1333, CWE-407

NVD status

Received

Published

2026-08-17