UnratedFix available

UBUNTU-CVE-2026-44394

Type: advisorySource: OSV1 source record

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.

Announced 28 May 2026Source revision 1

Original source ↗

UBUNTU-CVE-2026-44394

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-2026-44394

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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      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
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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"
    },
    "versions": [
      "2:8.0.0-0ubuntu1",
      "2:9.0.0~b1-0ubuntu1",
      "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-2026-44394.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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          }
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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-2026-44394.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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        "events": [
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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-2026-44394.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-2026-44394.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": [
          {
            "introduced": "0"
          },
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          }
        ]
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    ],
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      "ecosystem": "Ubuntu:24.04:LTS"
    },
    "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": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44394.json"
    },
    "ecosystem_specific": {
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          "binary_name": "keystone",
          "binary_version": "2:25.0.0-0ubuntu1.4"
        },
        {
          "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": [
        {
          "binary_name": "keystone",
          "binary_version": "2:28.0.0-0ubuntu1.3"
        },
        {
          "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"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
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            "fixed": "2:29.0.0-0ubuntu1.2"
          }
        ]
      }
    ],
    "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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      "2:29.0.0~rc1-0ubuntu1",
      "2:29.0.0-0ubuntu1"
    ],
    "database_specific": {
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    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "keystone",
          "binary_version": "2:29.0.0-0ubuntu1.2"
        },
        {
          "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: #47234 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 13:12:51 GMT
Publisher date: Thu, 28 May 2026 19:16:00 GMT

Read the original announcement