CVE-2026-84305 - sqlparse: Reindentation of tuple lists causes near-cap quadratic CPU consumption
Brief
CVE ID : CVE-2026-84305
Published : Sept. 1, 2026, 6:33 p. m.
- 43 minutes ago
Description : sqlparse is a non-validating SQL parser module for Python. Prior to 0.
- 0, sqlparse. format(sql, reindent=True) and sqlformat --reindent route attacker-controlled parenthesized tuple lists through ReindentFilter. _get_offset() in sqlparse/filters/reindent. py, where _flatten_up_to_token() repeatedly rebuilds and joins the statement prefix.
Thousands of offset calculations walk an expanding token tree, producing quadratic CPU consumption for inputs that remain below MAX_GROUPING_TOKENS and causing request delays, reduced throughput, or worker starvation. This issue is fixed in version 0.
- 0.
Severity: 0.0
- NA
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