PYSEC-2026-3697 sqlparse: Quadratic O(n²) DoS in group_comments

Summary A comment-only statement -- c\nn may cause a Denial of Service DoS. Details Location: sqlparse/engine/grouping.py:331-341 groupcomments, invoked first in group at grouping.py:439. Reachable via sqlparse.parse and sqlparse.formatsql, stripcomments=True. A statement made of many single-line...

sqlparse: Quadratic O(n²) DoS in group_comments

SummaryA comment-only statement -- c\nn may cause a Denial of Service DoS. DetailsLocation: sqlparse/engine/grouping.py:331-341 groupcomments, invoked first in group at grouping.py:439. Reachable via sqlparse.parse and sqlparse.formatsql, stripcomments=True.A statement made of many single-line...

PYSEC-2026-3698 sqlparse: Inefficient Regex Handling of Dollar-Quoted SQL Literals Leads to ReDoS (Denial of Service)

Summary sqlparse contains a Regular Expression Denial of Service ReDoS vulnerability in its dollar-quoted SQL literal lexer. The regex pattern at sqlparse/keywords.py:33 uses a backreference \1 to match closing dollar-quote delimiters, causing On² CPU complexity when processing inputs containing...

PYSEC-2026-3699 sqlparse: TokenList.__init__ materializes O(subtree) value per group, causing CPU DoS before depth/token caps trigger

Summary sqlparse ships hard limits MAXGROUPINGDEPTH=100, MAXGROUPINGTOKENS=10000 intended to bound parsing work on attacker-supplied SQL, but the path that reaches those limits is itself Ondepth per token-group construction. A 1-2 KB SQL payload e.g. SELECT 1 ... with 500-2000 nesting levels, or ...

sqlparse: Inefficient Regex Handling of Dollar-Quoted SQL Literals Leads to ReDoS (Denial of Service)

Summarysqlparse contains a Regular Expression Denial of Service ReDoS vulnerability in its dollar-quoted SQL literal lexer. The regex pattern at sqlparse/keywords.py:33 uses a backreference \1 to match closing dollar-quote delimiters, causing On² CPU complexity when processing inputs containing...

sqlparse: Generated Python and PHP snippets allow SQL string breakout through unescaped backslashes

SummaryThe documented Python and PHP output modes generate source-code snippets from caller-supplied SQL. Their output filters escape quote characters without first escaping existing backslashes. Crafted SQL can therefore neutralize the generated quote escape, terminate the intended language...

PYSEC-2026-3696 sqlparse: Generated Python and PHP snippets allow SQL string breakout through unescaped backslashes

Summary The documented Python and PHP output modes generate source-code snippets from caller-supplied SQL. Their output filters escape quote characters without first escaping existing backslashes. Crafted SQL can therefore neutralize the generated quote escape, terminate the intended language...

PT-2026-80668

Summary A comment-only statement -- c n may cause a Denial of Service DoS. Details Location: sqlparse/engine/grouping.py:331-341 group comments, invoked first in group at grouping.py:439. Reachable via sqlparse.parse and sqlparse.formatsql, strip comments=True. A statement made of many single-lin...

PT-2026-80669

Summary sqlparse contains a Regular Expression Denial of Service ReDoS vulnerability in its dollar-quoted SQL literal lexer. The regex pattern at sqlparse/keywords.py:33 uses a backreference 1 to match closing dollar-quote delimiters, causing On² CPU complexity when processing inputs containing...

OPENSUSE-SU-2026:11557-1 python313-sqlparse-0.6.0-1.1 on GA media

These are all security issues fixed in the python313-sqlparse-0.6.0-1.1 package on the GA media of openSUSE Tumbleweed...

PT-2026-80670

Summary sqlparse ships hard limits MAX GROUPING DEPTH=100, MAX GROUPING TOKENS=10000 intended to bound parsing work on attacker-supplied SQL, but the path that reaches those limits is itself Ondepth per token-group construction. A 1-2 KB SQL payload e.g. SELECT 1 ... with 500-2000 nesting levels,...

SUSE CVE-2026-54284

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 groupparenthesis and groupcase, causing quadratic CPU consumption through sqlparse.parse,...

SUSE CVE-2026-59893

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, SQLREGEX in sqlparse/keywords.py and the per-position loop in sqlparse/lexer.py repeatedly scan unmatched dollar-quoted literal and multiline-comment delimiters, causing quadratic CPU consumption through sqlparse.parse,...

SUSE CVE-2026-59894

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, sqlparse/filters/output.py fails to escape existing backslashes before quotes in sqlparse.format outputformat='python' and outputformat='php' and the corresponding sqlformat -l modes, allowing crafted SQL to terminate the...

SUSE CVE-2026-71491

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, groupcomments in sqlparse/engine/grouping.py repeatedly rescans comment-only statements before the MAXGROUPINGTOKENS guard, causing quadratic CPU consumption through sqlparse.parse and sqlparse.formatsql, stripcomments=Tru...

Linux Distros Unpatched Vulnerability : CVE-2026-59894

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, sqlparse/filters/output.py fails to escape existing backslashes before quotes in...

Linux Distros Unpatched Vulnerability : CVE-2026-59893

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, SQLREGEX in sqlparse/keywords.py and the per-position loop in sqlparse/lexer.py...

Linux Distros Unpatched Vulnerability : CVE-2026-54284

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-71491

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, groupcomments in sqlparse/engine/grouping.py repeatedly rescans comment-only statemen...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS via the groupcomments function in sqlparse/engine/grouping.py when parsing a statement composed entirely of comment tokens e.g., repeated -- c\n lines. The function rescans the entire remaining token tail once per...