CVE-2026-33551

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.

CVSS v3 3.5 LOW

3.5^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://bugs.launchpad.net/keystone/+bug/2142138	Exploit Issue Tracking
https://security.openstack.org/ossa/OSSA-2026-005.html	Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/07/12	Mailing List Patch Third Party Advisory
https://bugs.launchpad.net/keystone/+bug/2142138	Exploit Issue Tracking

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openstack:keystone::::::::
	cpe:2.3:a:openstack:keystone:27.0.0:::::::*
	cpe:2.3:a:openstack:keystone:28.0.0:::::::*
	cpe:2.3:a:openstack:keystone:29.0.0:::::::*

History

No history.

Information

Published : 2026-04-10 03:16

Updated : 2026-06-17 10:37

NVD link : CVE-2026-33551

Mitre link : CVE-2026-33551

CVE.ORG link : CVE-2026-33551

JSON object : View

Products Affected

openstack

keystone

CWE

CWE-863

Incorrect Authorization

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