High [CVE-2026-54284] Denial of Service via quadratic CPU consumption in SQL parsing
This high-severity Red Hat Linux advisory covers CVE-2026-54284 affecting Red Hat Ansible Automation Platform 2, Red Hat Discovery 2, Red Hat OpenShift AI (RHOAI).
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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.
A remote attacker could exploit a vulnerability in the TokenList construction and string conversion processes, specifically when handling nested token subtrees. This flaw leads to quadratic CPU consumption, which can result in a Denial of Service (DoS) by exhausting system resources before internal limits are reached.
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 Red Hat products: Red Hat Ansible Automation Platform 2; Red Hat Discovery 2; Red Hat OpenShift AI (RHOAI); Red Hat OpenShift Container Platform 4; Red Hat OpenStack Platform 16.2; Red Hat OpenStack Platform 17.1; Red Hat OpenStack Platform 18.0; Red Hat Satellite 6; Red Hat Update Infrastructure 4 for Cloud Providers; Red Hat Update Infrastructure 5; Self-service automation portal 2.
Red Hat does not currently list a fixing RHSA for this CVE.
- < 0.6.0
Official advisory · high-confidence parse· fetched 44 minutes ago·verify at source
- 0.6.0
Official advisory · high-confidence parse· fetched 44 minutes ago·verify at source
Mitigation
Upgrade to a fixed release: 0.6.0. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 44 minutes ago·verify at source
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