An issue was discovered in OpenStack Keystone 14 through 26 before 26.1.1, 27.0.0, 28.0.0, and 29.0.0. Restricted application credentials can create EC2 credentials. By using a restricted application credential to call the EC2 credential creation API, an authenticated user with only a reader role may obtain an EC2/S3 credential that carries the full set of the parent user's S3 permissions, effectively bypassing the role restrictions imposed on the application credential. Only deployments that use restricted application credentials in combination with the EC2/S3 compatibility API (swift3 / s3api) are affected.
History

Fri, 10 Apr 2026 04:30:00 +0000

Type Values Removed Values Added
References

Fri, 10 Apr 2026 02:45:00 +0000

Type Values Removed Values Added
Description An issue was discovered in OpenStack Keystone 14 through 26 before 26.1.1, 27.0.0, 28.0.0, and 29.0.0. Restricted application credentials can create EC2 credentials. By using a restricted application credential to call the EC2 credential creation API, an authenticated user with only a reader role may obtain an EC2/S3 credential that carries the full set of the parent user's S3 permissions, effectively bypassing the role restrictions imposed on the application credential. Only deployments that use restricted application credentials in combination with the EC2/S3 compatibility API (swift3 / s3api) are affected.
First Time appeared Openstack
Openstack keystone
Weaknesses CWE-863
CPEs cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
Vendors & Products Openstack
Openstack keystone
References
Metrics cvssV3_1

{'score': 3.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-10T03:07:01.673Z

Reserved: 2026-03-22T00:00:00.000Z

Link: CVE-2026-33551

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-10T03:16:02.723

Modified: 2026-04-10T04:17:15.010

Link: CVE-2026-33551

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-10T08:36:22Z