High [CVE-2026-59893] Denial of Service via inefficient SQL parsing

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. A remote attacker could exploit this vulnerability by providing specially crafted SQL input.

This flaw causes inefficient processing of certain SQL patterns, leading to excessive CPU consumption and potentially a Denial of Service (DoS) condition, making the application unresponsive. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Weakness: CWE-1333.

Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Ansible Automation Platform 2.6 for RHEL 10; Red Hat Ansible Automation Platform 2.6 for RHEL 9; and 16 more.

Affected products named by the advisory: Red Hat Ansible Automation Platform 2.7 for RHEL 10; Red Hat Ansible Automation Platform 2.7 for RHEL 9; Red Hat Satellite 6.16 for RHEL 8; Red Hat Satellite 6.16 for RHEL 9; and 12 more.