CVE-2026-54284
High
Description
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.
SeverityHigh
CVSS8.7
Exploit probability—
ProductSqlparse
PublishedAug 17, 2026
First seenAug 17, 2026
Weakness typeCWE-407CWE-407CWE-1333CWE-1333
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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