Incorrect Authorization Affecting keystone package, versions <2:21.0.1-0ubuntu2.4


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-UBUNTU2204-KEYSTONE-15982832
  • published17 Jun 2026
  • disclosed10 Apr 2026

Introduced: 10 Apr 2026

CVE-2026-33551  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 keystone to version 2:21.0.1-0ubuntu2.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream keystone package and not the keystone package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

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 Base Scores

version 3.1