UnratedFix available

UBUNTU-CVE-2026-33551

Type: advisorySource: OSV1 source record

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.

Announced 10 Apr 2026Source revision 1

Original source ↗

UBUNTU-CVE-2026-33551

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:UBUNTU-CVE-2026-33551

keystone

Source reference: /affected/0/package/name

Affected versions: 2:8.0.0-0ubuntu1
Source reference: /affected/0/versions
2:9.0.0~b1-0ubuntu1
Source reference: /affected/0/versions
2:9.0.0~b2-0ubuntu1
Source reference: /affected/0/versions
2:9.0.0~b3-0ubuntu1
Source reference: /affected/0/versions
2:9.0.0~rc1-0ubuntu1
Source reference: /affected/0/versions
2:9.0.0-0ubuntu1
Source reference: /affected/0/versions
2:9.0.2-0ubuntu1
Source reference: /affected/0/versions
2:9.0.2-0ubuntu2
Source reference: /affected/0/versions
2:9.1.0-0ubuntu1
Source reference: /affected/0/versions
2:9.2.0-0ubuntu1
Source reference: /affected/0/versions
2:9.3.0-0ubuntu1
Source reference: /affected/0/versions
2:9.3.0-0ubuntu2
Source reference: /affected/0/versions
2:9.3.0-0ubuntu3
Source reference: /affected/0/versions
2:9.3.0-0ubuntu3.1
Source reference: /affected/0/versions
2:9.3.0-0ubuntu3.2
Source reference: /affected/0/versions
2:9.3.0-0ubuntu3.2+esm2
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

keystone

Source reference: /affected/1/package/name

Affected versions: 2:12.0.0-0ubuntu1
Source reference: /affected/1/versions
2:13.0.0~b1-0ubuntu1
Source reference: /affected/1/versions
2:13.0.0~b2-0ubuntu1
Source reference: /affected/1/versions
2:13.0.0~b3-0ubuntu1
Source reference: /affected/1/versions
2:13.0.0~rc1-0ubuntu1
Source reference: /affected/1/versions
2:13.0.0~rc2-0ubuntu1
Source reference: /affected/1/versions
2:13.0.0-0ubuntu1
Source reference: /affected/1/versions
2:13.0.1-0ubuntu1
Source reference: /affected/1/versions
2:13.0.2-0ubuntu1
Source reference: /affected/1/versions
2:13.0.2-0ubuntu3
Source reference: /affected/1/versions
2:13.0.4-0ubuntu1
Source reference: /affected/1/versions
2:13.0.4-0ubuntu1+esm1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

keystone

Source reference: /affected/2/package/name

Affected versions: 2:16.0.0-0ubuntu1
Source reference: /affected/2/versions
2:17.0.0~b1~git2019121613.db81fee63-0ubuntu1
Source reference: /affected/2/versions
2:17.0.0~b2~git2020020513.99733f172-0ubuntu1
Source reference: /affected/2/versions
2:17.0.0~b3~git2020032415.9f9040257-0ubuntu1
Source reference: /affected/2/versions
2:17.0.0~b3~git2020032415.9f9040257-0ubuntu2
Source reference: /affected/2/versions
2:17.0.0~b3~git2020041013.7bb6314e4-0ubuntu1
Source reference: /affected/2/versions
2:17.0.0-0ubuntu0.20.04.1
Source reference: /affected/2/versions
2:17.0.1-0ubuntu1
Source reference: /affected/2/versions
2:17.0.1-0ubuntu2
Source reference: /affected/2/versions
2:17.0.1-0ubuntu2+esm1
Source reference: /affected/2/versions
2:17.0.1-0ubuntu2+esm2
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

keystone

Source reference: /affected/3/package/name

Affected versions: 2:20.0.0-0ubuntu1
Source reference: /affected/3/versions
2:20.0.0+git2021120815.2ddf8f321-0ubuntu1
Source reference: /affected/3/versions
2:20.0.0+git2022011217.771c943ad-0ubuntu1
Source reference: /affected/3/versions
2:20.0.0+git2022030313.a3fc9e7c3-0ubuntu1
Source reference: /affected/3/versions
2:21.0.0-0ubuntu1
Source reference: /affected/3/versions
2:21.0.1-0ubuntu1
Source reference: /affected/3/versions
2:21.0.1-0ubuntu2
Source reference: /affected/3/versions
2:21.0.1-0ubuntu2.1
Source reference: /affected/3/versions
2:21.0.1-0ubuntu2.2
Source reference: /affected/3/versions
Fixed versions: 2:21.0.1-0ubuntu2.4
Source reference: /affected/3/ranges
Prerequisites: Not stated in this record

keystone

Source reference: /affected/4/package/name

Affected versions: 2:24.0.0-0ubuntu1
Source reference: /affected/4/versions
2:24.0.0+git2024011916.adfa92b4-0ubuntu1
Source reference: /affected/4/versions
2:25.0.0~rc1-0ubuntu1
Source reference: /affected/4/versions
2:25.0.0-0ubuntu1
Source reference: /affected/4/versions
2:25.0.0-0ubuntu1.1
Source reference: /affected/4/versions
2:25.0.0-0ubuntu1.2
Source reference: /affected/4/versions
Fixed versions: 2:25.0.0-0ubuntu1.4
Source reference: /affected/4/ranges
Prerequisites: Not stated in this record

keystone

Source reference: /affected/5/package/name

Affected versions: 2:27.0.0-0ubuntu1
Source reference: /affected/5/versions
2:27.0.0+git2025080113.e066e18ab-0ubuntu1
Source reference: /affected/5/versions
2:28.0.0~rc1-0ubuntu1
Source reference: /affected/5/versions
2:28.0.0-0ubuntu1
Source reference: /affected/5/versions
2:28.0.0-0ubuntu1.1
Source reference: /affected/5/versions
Fixed versions: 2:28.0.0-0ubuntu1.3
Source reference: /affected/5/ranges
Prerequisites: Not stated in this record

keystone

Source reference: /affected/6/package/name

Affected versions: 2:28.0.0-0ubuntu1
Source reference: /affected/6/versions
2:28.0.0-0ubuntu2
Source reference: /affected/6/versions
2:28.0.0+git20260119.61.8a42793e7-0ubuntu1
Source reference: /affected/6/versions
2:29.0.0~rc1-0ubuntu1
Source reference: /affected/6/versions
2:29.0.0-0ubuntu1
Source reference: /affected/6/versions
Fixed versions: 2:29.0.0-0ubuntu1.2
Source reference: /affected/6/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
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        "events": [
          {
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    "package": {
      "name": "keystone",
      "purl": "pkg:deb/ubuntu/keystone?arch=source&distro=esm-infra-legacy%2Fxenial",
      "ecosystem": "Ubuntu:Pro:16.04:LTS"
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      "2:9.0.0~b2-0ubuntu1",
      "2:9.0.0~b3-0ubuntu1",
      "2:9.0.0~rc1-0ubuntu1",
      "2:9.0.0-0ubuntu1",
      "2:9.0.2-0ubuntu1",
      "2:9.0.2-0ubuntu2",
      "2:9.1.0-0ubuntu1",
      "2:9.2.0-0ubuntu1",
      "2:9.3.0-0ubuntu1",
      "2:9.3.0-0ubuntu2",
      "2:9.3.0-0ubuntu3",
      "2:9.3.0-0ubuntu3.1",
      "2:9.3.0-0ubuntu3.2",
      "2:9.3.0-0ubuntu3.2+esm2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33551.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "keystone",
          "binary_version": "2:9.3.0-0ubuntu3.2+esm2"
        },
        {
          "binary_name": "python-keystone",
          "binary_version": "2:9.3.0-0ubuntu3.2+esm2"
        }
      ]
    }
  },
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          {
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    "package": {
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      "purl": "pkg:deb/ubuntu/keystone?arch=source&distro=esm-infra%2Fbionic",
      "ecosystem": "Ubuntu:Pro:18.04:LTS"
    },
    "versions": [
      "2:12.0.0-0ubuntu1",
      "2:13.0.0~b1-0ubuntu1",
      "2:13.0.0~b2-0ubuntu1",
      "2:13.0.0~b3-0ubuntu1",
      "2:13.0.0~rc1-0ubuntu1",
      "2:13.0.0~rc2-0ubuntu1",
      "2:13.0.0-0ubuntu1",
      "2:13.0.1-0ubuntu1",
      "2:13.0.2-0ubuntu1",
      "2:13.0.2-0ubuntu3",
      "2:13.0.4-0ubuntu1",
      "2:13.0.4-0ubuntu1+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33551.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "keystone",
          "binary_version": "2:13.0.4-0ubuntu1+esm1"
        },
        {
          "binary_name": "python-keystone",
          "binary_version": "2:13.0.4-0ubuntu1+esm1"
        }
      ]
    }
  },
  {
    "ranges": [
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    "package": {
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      "purl": "pkg:deb/ubuntu/keystone?arch=source&distro=esm-infra%2Ffocal",
      "ecosystem": "Ubuntu:Pro:20.04:LTS"
    },
    "versions": [
      "2:16.0.0-0ubuntu1",
      "2:17.0.0~b1~git2019121613.db81fee63-0ubuntu1",
      "2:17.0.0~b2~git2020020513.99733f172-0ubuntu1",
      "2:17.0.0~b3~git2020032415.9f9040257-0ubuntu1",
      "2:17.0.0~b3~git2020032415.9f9040257-0ubuntu2",
      "2:17.0.0~b3~git2020041013.7bb6314e4-0ubuntu1",
      "2:17.0.0-0ubuntu0.20.04.1",
      "2:17.0.1-0ubuntu1",
      "2:17.0.1-0ubuntu2",
      "2:17.0.1-0ubuntu2+esm1",
      "2:17.0.1-0ubuntu2+esm2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33551.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "keystone",
          "binary_version": "2:17.0.1-0ubuntu2+esm2"
        },
        {
          "binary_name": "keystone-common",
          "binary_version": "2:17.0.1-0ubuntu2+esm2"
        },
        {
          "binary_name": "python3-keystone",
          "binary_version": "2:17.0.1-0ubuntu2+esm2"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2:21.0.1-0ubuntu2.4"
          }
        ]
      }
    ],
    "package": {
      "name": "keystone",
      "purl": "pkg:deb/ubuntu/keystone?arch=source&distro=jammy",
      "ecosystem": "Ubuntu:22.04:LTS"
    },
    "versions": [
      "2:20.0.0-0ubuntu1",
      "2:20.0.0+git2021120815.2ddf8f321-0ubuntu1",
      "2:20.0.0+git2022011217.771c943ad-0ubuntu1",
      "2:20.0.0+git2022030313.a3fc9e7c3-0ubuntu1",
      "2:21.0.0-0ubuntu1",
      "2:21.0.1-0ubuntu1",
      "2:21.0.1-0ubuntu2",
      "2:21.0.1-0ubuntu2.1",
      "2:21.0.1-0ubuntu2.2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33551.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "keystone",
          "binary_version": "2:21.0.1-0ubuntu2.4"
        },
        {
          "binary_name": "keystone-common",
          "binary_version": "2:21.0.1-0ubuntu2.4"
        },
        {
          "binary_name": "python3-keystone",
          "binary_version": "2:21.0.1-0ubuntu2.4"
        }
      ],
      "availability": "No subscription required"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
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            "introduced": "0"
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          }
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      "ecosystem": "Ubuntu:24.04:LTS"
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    "versions": [
      "2:24.0.0-0ubuntu1",
      "2:24.0.0+git2024011916.adfa92b4-0ubuntu1",
      "2:25.0.0~rc1-0ubuntu1",
      "2:25.0.0-0ubuntu1",
      "2:25.0.0-0ubuntu1.1",
      "2:25.0.0-0ubuntu1.2"
    ],
    "database_specific": {
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    },
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        },
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          "binary_name": "keystone-common",
          "binary_version": "2:25.0.0-0ubuntu1.4"
        },
        {
          "binary_name": "python3-keystone",
          "binary_version": "2:25.0.0-0ubuntu1.4"
        }
      ],
      "availability": "No subscription required"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2:28.0.0-0ubuntu1.3"
          }
        ]
      }
    ],
    "package": {
      "name": "keystone",
      "purl": "pkg:deb/ubuntu/keystone?arch=source&distro=questing",
      "ecosystem": "Ubuntu:25.10"
    },
    "versions": [
      "2:27.0.0-0ubuntu1",
      "2:27.0.0+git2025080113.e066e18ab-0ubuntu1",
      "2:28.0.0~rc1-0ubuntu1",
      "2:28.0.0-0ubuntu1",
      "2:28.0.0-0ubuntu1.1"
    ],
    "database_specific": {
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    },
    "ecosystem_specific": {
      "binaries": [
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          "binary_name": "keystone",
          "binary_version": "2:28.0.0-0ubuntu1.3"
        },
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          "binary_name": "keystone-common",
          "binary_version": "2:28.0.0-0ubuntu1.3"
        },
        {
          "binary_name": "python3-keystone",
          "binary_version": "2:28.0.0-0ubuntu1.3"
        }
      ],
      "availability": "No subscription required"
    }
  },
  {
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        "type": "ECOSYSTEM",
        "events": [
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            "introduced": "0"
          },
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          }
        ]
      }
    ],
    "package": {
      "name": "keystone",
      "purl": "pkg:deb/ubuntu/keystone?arch=source&distro=resolute",
      "ecosystem": "Ubuntu:26.04:LTS"
    },
    "versions": [
      "2:28.0.0-0ubuntu1",
      "2:28.0.0-0ubuntu2",
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    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "keystone",
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        },
        {
          "binary_name": "keystone-common",
          "binary_version": "2:29.0.0-0ubuntu1.2"
        },
        {
          "binary_name": "python3-keystone",
          "binary_version": "2:29.0.0-0ubuntu1.2"
        }
      ],
      "availability": "No subscription required"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #47105 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 13:10:23 GMT
Publisher date: Fri, 10 Apr 2026 03:16:00 GMT

Read the original announcement