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TI-2026-50099 Aliases CVE-2026-71491GHSA-f2ff-p2ww-7p4p

sqlparse: Quadratic O(n²) DoS in group_comments

Priority MEDIUM 43CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 18 fixed, 8 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00263 18th percentileScored 2026-11-07
Fix Partial sqlparse (andialbrecht): 0.6.0sqlparse (PyPI): 0.6.0Red Hat: 18 advisoriesRed Hat: 18 fixed, 8 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
andialbrechtsqlparsebefore 0.6.00.6.0Patch availableCNA
—sqlparse (PyPI)before 0.6.00.6.0Patch availableGHSA-f2ff-p2ww-7p4p
  • sqlparse Vendorandialbrecht Affected before 0.6.0 Fixed in 0.6.0 Patch available CNA
  • sqlparse (PyPI) Vendor— Affected before 0.6.0 Fixed in 0.6.0 Patch available GHSA-f2ff-p2ww-7p4p

Remediation

  • Fix · CNA sqlparse (andialbrecht) Fixed in 0.6.0
  • Fix · GHSA-f2ff-p2ww-7p4p sqlparse (PyPI) Fixed in 0.6.0 Advisory →

Red Hat 18 advisories

  • RHSA-2026:86891 Released 2026-10-21 · Red Hat rating Critical
    RHOAI 3.5.2 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.5 registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-cli-rhel9 +47
  • RHSA-2026:84734 Released 2026-10-19 · Red Hat rating Critical
    RHOAI 3.4.5 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-ai-gateway-payload-processing-rhel9, registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9 +47
  • RHSA-2026:82151 Released 2026-10-13 · Red Hat rating Critical
    Ansible automation portal Red Hat Enterprise Linux Images
    • Red Hat Ansible Automation Platform 2.2 registry.redhat.io/ansible-automation-platform/bootc-automation-portal-rhel9
Show 15 more Red Hat advisories
  • RHSA-2026:74505 Released 2026-10-01 · Red Hat rating Critical
    Satellite 6.17.12 Async Update
    • Red Hat Satellite 6.17 for RHEL 9 foreman-3.14.0.22-1.el9sat, foreman-cli-3.14.0.22-1.el9sat, foreman-debug-3.14.0.22-1.el9sat +31
  • RHSA-2026:74504 Released 2026-10-01 · Red Hat rating Critical
    Satellite 6.18.10 Async Update
    • Red Hat Satellite 6.18 for RHEL 9 foreman-3.16.0.25-1.el9sat, foreman-cli-3.16.0.25-1.el9sat, foreman-debug-3.16.0.25-1.el9sat +26
  • RHSA-2026:74648 Released 2026-10-01 · Red Hat rating Important
    General availability of the satellite/iop-advisor-backend-rhel9 container image
    • Red Hat Satellite 6.19 registry.redhat.io/satellite/iop-advisor-backend-rhel9
  • RHSA-2026:74643 Released 2026-10-01 · Red Hat rating Important
    General availability of the satellite/iop-advisor-backend-rhel9 container image
    • Red Hat Satellite 6.18 registry.redhat.io/satellite/iop-advisor-backend-rhel9
  • RHSA-2026:74503 Released 2026-10-01 · Red Hat rating Critical
    Satellite 6.19.5 Async Update
    • Red Hat Satellite 6.19 for RHEL 9 foreman-3.18.0.14-1.el9sat, foreman-cli-3.18.0.14-1.el9sat, foreman-debug-3.18.0.14-1.el9sat +19
  • RHSA-2026:71210 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.5 Container Release Update
    • Red Hat Ansible Automation Platform 2.5 registry.redhat.io/ansible-automation-platform-25/controller-rhel8, registry.redhat.io/ansible-automation-platform-25/de-minimal-rhel8, registry.redhat.io/ansible-automation-platform-25/ee-minimal-rhel8 +4
  • RHSA-2026:71179 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.6 Container Release Update
    • Red Hat Ansible Automation Platform 2.6 registry.redhat.io/ansible-automation-platform-26/aap-must-gather-rhel9, registry.redhat.io/ansible-automation-platform-26/controller-rhel9, registry.redhat.io/ansible-automation-platform-26/de-minimal-rhel9 +10
  • RHSA-2026:71114 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.5 for RHEL 8 automation-controller-venv-tower-4.6.33-1.el8ap, automation-gateway-proxy-server-2.5.10-8.el8ap, automation-gateway-server-2.5.20260923-1.el8ap +3
    • Red Hat Ansible Automation Platform 2.5 for RHEL 9 automation-controller-venv-tower-4.6.33-1.el9ap, automation-gateway-proxy-server-2.6.17-3.el9ap, automation-gateway-server-2.5.20260923-1.el9ap +3
  • RHSA-2026:71177 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.7 Container Release Update
    • Red Hat Ansible Automation Platform 2.7 registry.redhat.io/ansible-automation-platform-27/aap-must-gather-rhel9, registry.redhat.io/ansible-automation-platform-27/controller-rhel9, registry.redhat.io/ansible-automation-platform-27/de-minimal-rhel9 +4
  • RHSA-2026:71113 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.6 for RHEL 10 python-sqlparse-0.6.0-1.el10ap, python3-sqlparse-0.6.0-1.el10ap, receptor-1.6.8-1.el10ap
    • Red Hat Ansible Automation Platform 2.6 for RHEL 9 automation-controller-4.7.17-1.el9ap, automation-controller-cli-4.7.17-1.el9ap, automation-controller-server-4.7.17-1.el9ap +7
  • RHSA-2026:71112 Released 2026-09-23 · Red Hat rating Important
    Red Hat Ansible Automation Platform 2.7 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.7 for RHEL 10 python-sqlparse-0.6.0-1.el10ap, python3-sqlparse-0.6.0-1.el10ap, receptor-1.6.8-1.el10ap
    • Red Hat Ansible Automation Platform 2.7 for RHEL 9 python3.12-sqlparse-0.6.0-1.el9ap, receptor-1.6.8-1.el9ap
  • RHSA-2026:69539 Released 2026-09-21 · Red Hat rating Important
    RHOAI 3.5.1 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.5 registry.redhat.io/rhoai/odh-cli-rhel9, registry.redhat.io/rhoai/odh-mlserver-cuda-rhel9, registry.redhat.io/rhoai/odh-mlserver-rhel9 +28
  • RHSA-2026:69289 Released 2026-09-21 · Red Hat rating Important
    A Subscription Management tool for finding and reporting Red Hat product usage
    • Red Hat Discovery 2 registry.redhat.io/discovery/discovery-server-rhel9, registry.redhat.io/discovery/discovery-ui-rhel9
  • RHSA-2026:67279 Released 2026-09-14 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.7 Container Release Update
    • Red Hat Ansible Automation Platform 2.7 registry.redhat.io/ansible-automation-platform-27/controller-rhel9, registry.redhat.io/ansible-automation-platform-27/eda-controller-rhel9, registry.redhat.io/ansible-automation-platform-27/ee-minimal-rhel9 +7
  • RHSA-2026:61783 Released 2026-08-31 · Red Hat rating Important
    A Subscription Management tool for finding and reporting Red Hat product usage
    • Red Hat Discovery 2 registry.redhat.io/discovery/discovery-server-rhel9, registry.redhat.io/discovery/discovery-ui-rhel9

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ansible Automation Platform 2AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenShift Container Platform 5AffectedNo fix yet
Red Hat OpenStack Platform 16.2AffectedNo fix yet
Red Hat OpenStack Platform 17.1AffectedNo fix yet
Red Hat OpenStack Platform 18.0AffectedNo fix yet
Red Hat Update Infrastructure 4 for Cloud ProvidersAffectedNo fix planned: Will not fix
Red Hat Update Infrastructure 5AffectedNo fix yet
Red Hat Ansible Automation Platform 2.2Fixed RHSA-2026:82151
Red Hat Ansible Automation Platform 2.5Fixed RHSA-2026:71210
Red Hat Ansible Automation Platform 2.5 for RHEL 8Fixed RHSA-2026:71114
Red Hat Ansible Automation Platform 2.5 for RHEL 9Fixed RHSA-2026:71114
Red Hat Ansible Automation Platform 2.6Fixed RHSA-2026:71179
Red Hat Ansible Automation Platform 2.6 for RHEL 10Fixed RHSA-2026:71113
Red Hat Ansible Automation Platform 2.6 for RHEL 9Fixed RHSA-2026:71113
Red Hat Ansible Automation Platform 2.7Fixed RHSA-2026:67279, RHSA-2026:71177
Red Hat Ansible Automation Platform 2.7 for RHEL 10Fixed RHSA-2026:71112
Red Hat Ansible Automation Platform 2.7 for RHEL 9Fixed RHSA-2026:71112
Red Hat Discovery 2Fixed RHSA-2026:61783, RHSA-2026:69289
Red Hat OpenShift AI 3.4Fixed RHSA-2026:84734
Red Hat OpenShift AI 3.5Fixed RHSA-2026:69539, RHSA-2026:86891
Red Hat Satellite 6.17 for RHEL 9Fixed RHSA-2026:74505
Red Hat Satellite 6.18Fixed RHSA-2026:74643
Red Hat Satellite 6.18 for RHEL 9Fixed RHSA-2026:74504
Red Hat Satellite 6.19Fixed RHSA-2026:74648
Red Hat Satellite 6.19 for RHEL 9Fixed RHSA-2026:74503
Not affected: 22 products
  • Red Hat Ansible Automation Platform 2
  • Red Hat Ansible Automation Platform 2.5
  • 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
  • Red Hat Ansible Automation Platform 2.6 for RHEL 10
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9
  • Red Hat Ansible Automation Platform 2.7
  • Red Hat Ansible Automation Platform 2.7 for RHEL 10
  • Red Hat Ansible Automation Platform 2.7 for RHEL 9
  • Red Hat Discovery 2
  • Red Hat OpenShift AI 3.4
  • Red Hat OpenShift AI 3.5
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenStack Platform 13 (Queens)
  • Red Hat OpenStack Platform 16.2
  • Red Hat OpenStack Platform 17.1
  • Red Hat Satellite 6
  • Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Satellite 6.18 for RHEL 9
  • Red Hat Satellite 6.19 for RHEL 9
  • Red Hat Update Infrastructure 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-71491
  2. 2026-10-03 Alias added: GHSA-f2ff-p2ww-7p4p
  3. 2026-10-07 Affected versions changed · Red Hat
  4. 2026-10-07 Affected versions changed · Red Hat
  5. 2026-10-13 Fix available: Red Hat Ansible Automation Platform 2.2 · Red Hat
  6. 2026-10-13 Fix available: RHSA-2026:82151 · Red Hat
  7. 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
  8. 2026-10-20 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
  9. 2026-10-22 Fix available: RHSA-2026:86891 · Red Hat
  10. 2026-10-22 Affected versions changed · Red Hat
  11. 2026-10-30 Affected versions changed · Red Hat
  12. 2026-11-06 Fix available: RHSA-2026:71177 · Red Hat

References

Other 3

  • TI-2026-39184 sqlparse: TokenList.__init__ materializes O(subtree) value per group, causing CPU DoS before depth/token caps trigger CVSS 4.0HIGH 8.7
  • TI-2026-42707 sqlparse: Inefficient Regex Handling of Dollar-Quoted SQL Literals Leads to ReDoS (Denial of Service) CVSS 3.1HIGH 7.5
  • TI-2026-57940 sqlparse: Reindentation of tuple lists causes near-cap quadratic CPU consumption CVSS 4.0MEDIUM 5.1
  • TI-2026-76501 PHP code injection in sqlparse via output_format='php' CVSS 4.0HIGH 8.4
  • TI-2026-42708 sqlparse: Generated Python and PHP snippets allow SQL string breakout through unescaped backslashes CVSS 4.0MEDIUM 6.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences