CVE-2026-54284
sqlparse: TokenList.__init__ materializes O(subtree) value per group, causing CPU DoS before depth/token caps trigger
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-407 CWE-1333 |
| Vendor | andialbrecht |
| Product | sqlparse |
| Published | Aug 17, 2026 |
| Last Updated | Aug 17, 2026 |
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Affected Versions
andialbrecht / sqlparse
< 0.6.0