# CVE-2026-33551: keystone: An issue was discovered in OpenStack Keystone 14 through 26 before 26.1.1, 27.0.0, 28.0.0, and 29.0.0

CVE-2026-33551 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-33551, released April 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-33551
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 9, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | keystone Debian 12.15 (bookworm) | 2:22.0.2-0+deb12u2 | [DEBIAN-CVE-2026-33551](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33551.md) | Apr 10, 2026 |
| Linux | keystone Debian 13.5 (trixie) | 2:27.0.0-3+deb13u3 | [DEBIAN-CVE-2026-33551](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33551.md) | Apr 10, 2026 |
| Linux | keystone Debian 14 | 2:29.0.0-2 | [DEBIAN-CVE-2026-33551](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33551.md) | Apr 10, 2026 |
| Linux | keystone Ubuntu 22.04.1 LTS (jammy) | 2:21.0.1-0ubuntu2.4 | [keystone 2:21.0.1-0ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-keystone-2-21.0.1-0ubuntu2.4.md) | Jun 24, 2026 |
| Linux | keystone Ubuntu 24.04.5 LTS (noble) | 2:25.0.0-0ubuntu1.4 | [keystone 2:25.0.0-0ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-keystone-2-25.0.0-0ubuntu1.4.md) | Jun 24, 2026 |
| Linux | keystone Ubuntu 25.10 (questing) | 2:28.0.0-0ubuntu1.3 | [keystone 2:28.0.0-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-keystone-2-28.0.0-0ubuntu1.3.md) | Jun 24, 2026 |
| Linux | keystone Ubuntu 26.04.1 LTS (resolute) | 2:29.0.0-0ubuntu1.2 | [keystone 2:29.0.0-0ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-keystone-2-29.0.0-0ubuntu1.2.md) | May 28, 2026 |
| Linux | keystone-common Ubuntu 22.04.1 LTS (jammy) | 2:21.0.1-0ubuntu2.4 | [keystone-common 2:21.0.1-0ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-keystone-common-2-21.0.1-0ubuntu2.4.md) | Jun 24, 2026 |
| Linux | keystone-common Ubuntu 24.04.5 LTS (noble) | 2:25.0.0-0ubuntu1.4 | [keystone-common 2:25.0.0-0ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-keystone-common-2-25.0.0-0ubuntu1.4.md) | Jun 24, 2026 |
| Linux | keystone-common Ubuntu 25.10 (questing) | 2:28.0.0-0ubuntu1.3 | [keystone-common 2:28.0.0-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-keystone-common-2-28.0.0-0ubuntu1.3.md) | Jun 24, 2026 |
| Linux | keystone-common Ubuntu 26.04.1 LTS (resolute) | 2:29.0.0-0ubuntu1.2 | [keystone-common 2:29.0.0-0ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-keystone-common-2-29.0.0-0ubuntu1.2.md) | May 28, 2026 |
| Linux | python3-keystone Ubuntu 22.04.1 LTS (jammy) | 2:21.0.1-0ubuntu2.4 | [python3-keystone 2:21.0.1-0ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-keystone-2-21.0.1-0ubuntu2.4.md) | Jun 24, 2026 |
| Linux | python3-keystone Ubuntu 24.04.5 LTS (noble) | 2:25.0.0-0ubuntu1.4 | [python3-keystone 2:25.0.0-0ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-python3-keystone-2-25.0.0-0ubuntu1.4.md) | Jun 24, 2026 |
| Linux | python3-keystone Ubuntu 25.10 (questing) | 2:28.0.0-0ubuntu1.3 | [python3-keystone 2:28.0.0-0ubuntu1.3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-python3-keystone-2-28.0.0-0ubuntu1.3.md) | Jun 24, 2026 |
| Linux | python3-keystone Ubuntu 26.04.1 LTS (resolute) | 2:29.0.0-0ubuntu1.2 | [python3-keystone 2:29.0.0-0ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-python3-keystone-2-29.0.0-0ubuntu1.2.md) | May 28, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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