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.
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History
Thu, 27 Aug 2026 18:00:00 +0000
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| Weaknesses | CWE-1050 | |
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threat_severity
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cvssV3_1
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Fri, 21 Aug 2026 13:00:00 +0000
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Andialbrecht
Andialbrecht sqlparse |
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Andialbrecht
Andialbrecht sqlparse |
Mon, 17 Aug 2026 22:30:00 +0000
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ssvc
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Mon, 17 Aug 2026 17:30:00 +0000
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| Description | 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. | |
| Title | sqlparse: Quadratic O(n²) DoS in group_comments | |
| Weaknesses | CWE-400 CWE-407 |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-08-17T17:16:48.973Z
Updated: 2026-08-17T22:01:34.222Z
Reserved: 2026-08-06T19:56:23.725Z
Link: CVE-2026-71491
Updated: 2026-08-17T22:00:15.893Z
Status : Deferred
Published: 2026-08-17T18:18:12.120
Modified: 2026-09-09T21:11:46.833
Link: CVE-2026-71491