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TI-2020-17397 Aliases CVE-2020-28724GHSA-3p3h-qghp-hvh2

Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.

Priority LOW 31CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-601.

Summary

Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.

Why it matters now

EPSS 0.01681 77th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial werkzeug (PyPI): 0.11.6Red Hat: 3 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—werkzeug (PyPI)before 0.11.60.11.6Patch availableGHSA-3p3h-qghp-hvh2
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • werkzeug (PyPI) Vendor— Affected before 0.11.6 Fixed in 0.11.6 Patch available GHSA-3p3h-qghp-hvh2

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*before 0.11.6Vulnerablepallets
  • cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:* Versions before 0.11.6 Vulnerable ·pallets

Remediation

  • Fix · GHSA-3p3h-qghp-hvh2 werkzeug (PyPI) Fixed in 0.11.6 Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Ceph Storage 2AffectedNo fix planned: Out of support scope
Red Hat Satellite 6AffectedNo fix planned: Will not fix
Red Hat Update Infrastructure 3 for Cloud ProvidersAffectedNo fix planned: Out of support scope
Not affected: 6 products
  • Red Hat Enterprise Linux 8
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenStack Platform 16.1
  • Red Hat Quay 3
  • Red Hat Software Collections
  • Red Hat Virtualization 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-28724
  2. 2026-10-03 Alias added: GHSA-3p3h-qghp-hvh2

References

Exploit 1

Patch 1

Advisory 2

Other 2

  • TI-2019-10671 In Pallets Werkzeug before 0.15.5, SharedDataMiddleware mishandles drive names (such as C:) in Windows pathnames. CVSS 3.1HIGH 7.5
  • TI-2022-11856 Improper parsing of HTTP requests in Pallets Werkzeug v2.1.0 and below allows attackers… CVSS 3.1CRITICAL 9.8
  • TI-2023-10880 Werkzeug may allow high resource usage when parsing multipart form data with many fields CVSS 3.1HIGH 7.5
  • TI-2024-22527 Werkzeug's improper usage of a pathname and improper CSRF protection results in the remote command execution CVSS 3.1HIGH 7.5
  • TI-2024-33234 Werkzeug possible resource exhaustion when parsing file data in forms CVSS 4.0MEDIUM 6.9
  • TI-2023-24778 Uncontrolled resource consumption in pallets werkzeug CVSS 3.1HIGH 8.0
See all 13 →

Sources

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