CVE WatchSep 1, 2026

CVE-2026-84305

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, sqlparse.format(sql, reindent=True) and sqlformat --reindent rout

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 1, 2026 · Last modified: Sep 1, 2026 · CWE-407

EPSS · 30d

Not enough EPSS history yet.

Technical description

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, 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 0.6.0.

Official references

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