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

Vulnerability from nvd – Published: 2026-08-17 17:16 – Updated: 2026-08-17 22:01

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

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/e…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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          "cvssV4_0": {
            "attackComplexity": "LOW",
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CVE-2026-59894 (GCVE-0-2026-59894)

Vulnerability from nvd – Published: 2026-08-17 17:14 – Updated: 2026-08-17 22:01

Title

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

Summary

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 output_format='python' and output_format='php' and the corresponding sqlformat -l modes, allowing crafted SQL to terminate the generated string and inject Python or PHP code when a downstream consumer executes or imports the generated source. This issue is fixed in version 0.6.0.

Severity

6.2 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 21:29 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

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            "attackRequirements": "NONE",
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CVE-2026-59893 (GCVE-0-2026-59893)

Vulnerability from nvd – Published: 2026-08-17 17:41 – Updated: 2026-08-17 18:54

Title

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

Summary

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, SQL_REGEX 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(), sqlparse.format(), and sqlparse.split(). This issue is fixed in version 0.6.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 18:54 UTC

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/d…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-54284 (GCVE-0-2026-54284)

Vulnerability from nvd – Published: 2026-08-17 17:43 – Updated: 2026-08-17 19:32

Title

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

Summary

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 group_parenthesis and group_case, causing quadratic CPU consumption through sqlparse.parse(), sqlparse.format(), and sqlparse.split() before depth and token limits terminate processing. 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: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 19:31 UTC

CWE

CWE-407 - Inefficient Algorithmic Complexity
CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/9…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

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CVE-2023-30608 (GCVE-0-2023-30608)

Vulnerability from nvd – Published: 2023-04-18 21:32 – Updated: 2025-11-03 21:48

Title

Parser contains an inefficient regular expression in sqlparse

Summary

sqlparse is a non-validating SQL parser module for Python. In affected versions the SQL parser contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service). This issue was introduced by commit `e75e358`. The vulnerability may lead to Denial of Service (DoS). This issues has been fixed in sqlparse 0.4.4 by commit `c457abd5f`. Users are advised to upgrade. There are no known workarounds for this issue.

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-06 16:35 UTC

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M mitre root

References

6 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/c…	x_refsource_MISC
https://github.com/andialbrecht/sqlparse/commit/e…	x_refsource_MISC
https://owasp.org/www-community/attacks/Regular_e…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2023…
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: >= 0.1.15, < 0.4.4

Show details on NVD website

JSON

To clipboard

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CVE-2021-32839 (GCVE-0-2021-32839)

Vulnerability from nvd – Published: 2021-09-20 17:10 – Updated: 2025-11-03 21:44

Title

Regular Expression Denial of Service in sqlparse

Summary

sqlparse is a non-validating SQL parser module for Python. In sqlparse versions 0.4.0 and 0.4.1 there is a regular Expression Denial of Service in sqlparse vulnerability. The regular expression may cause exponential backtracking on strings containing many repetitions of '\r\n' in SQL comments. Only the formatting feature that removes comments from SQL statements is affected by this regular expression. As a workaround don't use the sqlformat.format function with keyword strip_comments=True or the --strip-comments command line flag when using the sqlformat command line tool. The issues has been fixed in sqlparse 0.4.2.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/8…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: >= 0.4.0, < 0.4.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-54284 (GCVE-0-2026-54284)

Vulnerability from cvelistv5 – Published: 2026-08-17 17:43 – Updated: 2026-08-17 19:32

Title

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

Summary

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 group_parenthesis and group_case, causing quadratic CPU consumption through sqlparse.parse(), sqlparse.format(), and sqlparse.split() before depth and token limits terminate processing. 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: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 19:31 UTC

CWE

CWE-407 - Inefficient Algorithmic Complexity
CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/9…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-59893 (GCVE-0-2026-59893)

Vulnerability from cvelistv5 – Published: 2026-08-17 17:41 – Updated: 2026-08-17 18:54

Title

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

Summary

sqlparse is a non-validating SQL parser module for Python. Prior to 0.6.0, SQL_REGEX 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(), sqlparse.format(), and sqlparse.split(). This issue is fixed in version 0.6.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 18:54 UTC

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/d…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

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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

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

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/e…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-59894 (GCVE-0-2026-59894)

Vulnerability from cvelistv5 – Published: 2026-08-17 17:14 – Updated: 2026-08-17 22:01

Title

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

Summary

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 output_format='python' and output_format='php' and the corresponding sqlformat -l modes, allowing crafted SQL to terminate the generated string and inject Python or PHP code when a downstream consumer executes or imports the generated source. This issue is fixed in version 0.6.0.

Severity

6.2 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 21:29 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: < 0.6.0

Show details on NVD website

JSON

To clipboard

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CVE-2023-30608 (GCVE-0-2023-30608)

Vulnerability from cvelistv5 – Published: 2023-04-18 21:32 – Updated: 2025-11-03 21:48

Title

Parser contains an inefficient regular expression in sqlparse

Summary

sqlparse is a non-validating SQL parser module for Python. In affected versions the SQL parser contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service). This issue was introduced by commit `e75e358`. The vulnerability may lead to Denial of Service (DoS). This issues has been fixed in sqlparse 0.4.4 by commit `c457abd5f`. Users are advised to upgrade. There are no known workarounds for this issue.

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-06 16:35 UTC

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M mitre root

References

6 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/c…	x_refsource_MISC
https://github.com/andialbrecht/sqlparse/commit/e…	x_refsource_MISC
https://owasp.org/www-community/attacks/Regular_e…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2023…
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: >= 0.1.15, < 0.4.4

Show details on NVD website

JSON

To clipboard

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CVE-2021-32839 (GCVE-0-2021-32839)

Vulnerability from cvelistv5 – Published: 2021-09-20 17:10 – Updated: 2025-11-03 21:44

Title

Regular Expression Denial of Service in sqlparse

Summary

sqlparse is a non-validating SQL parser module for Python. In sqlparse versions 0.4.0 and 0.4.1 there is a regular Expression Denial of Service in sqlparse vulnerability. The regular expression may cause exponential backtracking on strings containing many repetitions of '\r\n' in SQL comments. Only the formatting feature that removes comments from SQL statements is affected by this regular expression. As a workaround don't use the sqlformat.format function with keyword strip_comments=True or the --strip-comments command line flag when using the sqlformat command line tool. The issues has been fixed in sqlparse 0.4.2.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/andialbrecht/sqlparse/security…	x_refsource_CONFIRM
https://github.com/andialbrecht/sqlparse/commit/8…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

1 product

Vendor	Product	Version
andialbrecht	sqlparse	Affected: >= 0.4.0, < 0.4.2

Show details on NVD website

JSON

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