# Duplicate Advisory: sqlparse parsing heavily nested list leads to Denial of Service

Source: https://junglewise.ai/threats/duplicate-advisory-sqlparse-parsing-heavily-nested-list-leads-to-denial-0fd13253  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-04-30  
License: CC BY 4.0 with a link back

Severity: low · CVSS 3.1 · Published 2024-04-30

Duplicate Advisory: sqlparse parsing heavily nested list leads to Denial of Service

Technologies: [sqlparse (PyPI)](https://junglewise.ai/threats/technologies/sqlparse). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Low severity, with a CVSS score of 3.1, published 30 April 2024.

**Which products and versions are affected?** sqlparse (PyPI) ECOSYSTEM:introduced=0,fixed=0.5.0.

**Is there a fix for This vulnerability?** Yes. sqlparse (PyPI): upgrade to 0.5.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run sqlparse (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- sqlparse (PyPI): upgrade to 0.5.0 or later

  ```sh
  pip install "sqlparse>=0.5.0"
  ```


## Affected products

- sqlparse (PyPI) ECOSYSTEM:introduced=0,fixed=0.5.0

## Related threats

- [sqlparse quadratic CPU consumption in reindent filter](https://junglewise.ai/threats/cve-2026-84305-sqlparse-quadratic-cpu-consumption-in-reindent-filter)
- [sqlparse quadratic DoS in group_comments](https://junglewise.ai/threats/cve-2026-71491-sqlparse-quadratic-dos-in-group-comments)
- [sqlparse code injection in Python and PHP output modes](https://junglewise.ai/threats/cve-2026-59894-sqlparse-code-injection-in-python-and-php-output-modes)
- [sqlparse inefficient regex handling in dollar-quoted literals](https://junglewise.ai/threats/cve-2026-59893-sqlparse-inefficient-regex-handling-in-dollar-quoted-literals)
- [sqlparse TokenList CPU denial of service](https://junglewise.ai/threats/cve-2026-54284-sqlparse-tokenlist-cpu-denial-of-service)
