# CVE-2026-44394: keystone: An issue was discovered in OpenStack Keystone before 29.0.2

CVE-2026-44394 is fixed in 3 products on 1 platform, first by keystone 2:29.0.0-0ubuntu1.2, released May 28, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-44394
- Priority: High
- CVSS: 8.1 (high)
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 28, 2026

## Description

An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone federated token rescoping mechanism does not propagate the original token's expiry to the newly issued token. When a federated user rescopes a token via POST /v3/auth/tokens, the handle_scoped_token() function in the mapped authentication plugin returns response data without an expires_at value. The token provider falls back to issuing a token with a fresh default TTL. By rescoping repeatedly before each token expires, a user can maintain access indefinitely, bypassing operator-configured token lifetime policies. This is a variant of CVE-2012-3426. Only deployments using federated identity (SAML2, OpenID Connect) are affected.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | keystone Debian 12.15 (bookworm) | 2:22.0.2-0+deb12u3 | [DEBIAN-CVE-2026-44394](https://patchblox.com/security/data/fix/linux/debian-cve-2026-44394.md) | Jun 24, 2026 |
| Linux | keystone Debian 13.5 (trixie) | 2:27.0.0-3+deb13u4 | [DEBIAN-CVE-2026-44394](https://patchblox.com/security/data/fix/linux/debian-cve-2026-44394.md) | Jun 24, 2026 |
| Linux | keystone Debian 14 | 2:29.0.1-2 | [DEBIAN-CVE-2026-44394](https://patchblox.com/security/data/fix/linux/debian-cve-2026-44394.md) | Jun 24, 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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