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CVE-2026-71491 (GCVE-0-2026-71491)

Vulnerability from cvelistv5 – Published: 2026-08-17 17:16 – Updated: 2026-08-17 22:01
VLAI
Title
sqlparse: Quadratic O(n²) DoS in group_comments
Summary
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.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 22:00 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
Vendor Product Version CPE status
andialbrecht sqlparse Affected: < 0.6.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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