CVE-2026-71491: Andialbrecht Sqlparse

High severity, CVSS 8.7. EPSS: 0.3% chance of exploitation in the next 30 days.

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, group_comments in sqlparse/engine/grouping.py repeatedly rescans comment-only statements before the MAX_GROUPING_TOKENS guard, causing quadratic CPU consumption through sqlparse.parse() and sqlparse.format(sql, strip_comments=True). This issue is fixed in version 0.6.0.

Affected products

• Andialbrecht Sqlparse: before 0.6.0 (fixed in 0.6.0)

Published 2026-08-17. Last modified 2026-09-09.