CVE-2026-71491
High
Description
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.
SeverityHigh
CVSS8.7
Exploit probability—
ProductSqlparse
PublishedAug 17, 2026
First seenAug 17, 2026
How to fix
Update
- sqlparse0.6.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sqlparsePyPI | v < 0.6.0 | 0.6.0 |
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