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CVE-2026-44394

CVE-2026-44394

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.0 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • keystone

    Versions
    • ≥ 14.0.0, < 27.0.2: Affected (semver)
    • ≥ 28.0.0, < 28.0.2: Affected (semver)
    • ≥ 29.0.0, < 29.0.2: Affected (semver)

    Update to 27.0.2; Update to 28.0.2; Update to 29.0.2

  • keystone Debian:12

    Versions
    • 2:22.0.0-2
    • 2:22.0.2-0+deb12u1
    • 2:22.0.2-0+deb12u2
    Affected ranges
    • ECOSYSTEM: < 2:22.0.2-0+deb12u3

    Update to 2:22.0.2-0+deb12u3

  • keystone Debian:13

    Versions
    • 2:27.0.0-3
    • 2:27.0.0-3+deb13u1
    • 2:27.0.0-3+deb13u3
    Affected ranges
    • ECOSYSTEM: < 2:27.0.0-3+deb13u4

    Update to 2:27.0.0-3+deb13u4

  • keystone Debian:14

    Versions
    • 2:27.0.0-3
    • 2:28.0.0-1
    • 2:28.0.0-2
    • 2:28.0.0-3
    • 2:28.0.0-4
    • 2:28.0.0-5
    • 2:28.0.0-6
    • 2:28.0.0~rc1-1
    • 2:28.0.0~rc1-2
    • 2:28.0.0~rc1-4
    • 2:29.0.0-1
    • 2:29.0.0-2
    • 2:29.0.0-3
    • 2:29.0.0~rc1-1
    • 2:29.0.0~rc1-2
    • 2:29.0.1-1
    Affected ranges
    • ECOSYSTEM: < 2:29.0.1-2

    Update to 2:29.0.1-2

  • keystone PyPI

    Versions
    • 14.0.0
    • 14.0.1
    • 14.1.0
    • 14.2.0
    • 15.0.0
    • 15.0.0.0rc1
    • 15.0.0.0rc2
    • 15.0.1
    • 16.0.0
    • 16.0.0.0rc1
    • 16.0.0.0rc2
    • 16.0.1
    • 16.0.2
    • 17.0.0
    • 17.0.0.0rc1
    • 17.0.0.0rc2
    • 17.0.1
    • 18.0.0
    • 18.0.0.0rc1
    • 18.1.0
    • 19.0.0
    • 19.0.0.0rc1
    • 19.0.0.0rc2
    • 19.0.1
    • 20.0.0
    • 20.0.0.0rc1
    • 20.0.1
    • 21.0.0
    • 21.0.0.0rc1
    • 21.0.1
    • 22.0.0
    • 22.0.0.0rc1
    • 22.0.1
    • 22.0.2
    • 23.0.0
    • 23.0.0.0rc1
    • 23.0.1
    • 23.0.2
    • 24.0.0
    • 24.0.0.0rc1
    • 24.1.0
    • 25.0.0
    • 25.0.0.0rc1
    • 26.0.0
    • 26.0.0.0rc1
    • 26.1.0
    • 26.1.1
    • 27.0.0
    • 27.0.0.0rc1
    • 27.0.1
    Affected ranges
    • ECOSYSTEM: ≥ 14.0.0, < 27.0.2

    Update to 27.0.2

  • keystone PyPI

    Versions
    • 28.0.0
    • 28.0.1
    Affected ranges
    • ECOSYSTEM: ≥ 28.0.0, < 28.0.2

    Update to 28.0.2

  • keystone PyPI

    Versions
    • 29.0.0
    • 29.0.1
    Affected ranges
    • ECOSYSTEM: ≥ 29.0.0, < 29.0.2

    Update to 29.0.2

  • keystone PyPI

    Versions
    • 14.0.0
    • 14.0.1
    • 14.1.0
    • 14.2.0
    • 15.0.0
    • 15.0.0.0rc1
    • 15.0.0.0rc2
    • 15.0.1
    • 16.0.0
    • 16.0.0.0rc1
    • 16.0.0.0rc2
    • 16.0.1
    • 16.0.2
    • 17.0.0
    • 17.0.0.0rc1
    • 17.0.0.0rc2
    • 17.0.1
    • 18.0.0
    • 18.0.0.0rc1
    • 18.1.0
    • 19.0.0
    • 19.0.0.0rc1
    • 19.0.0.0rc2
    • 19.0.1
    • 20.0.0
    • 20.0.0.0rc1
    • 20.0.1
    • 21.0.0
    • 21.0.0.0rc1
    • 21.0.1
    • 22.0.0
    • 22.0.0.0rc1
    • 22.0.1
    • 22.0.2
    • 23.0.0
    • 23.0.0.0rc1
    • 23.0.1
    • 23.0.2
    • 24.0.0
    • 24.0.0.0rc1
    • 24.1.0
    • 25.0.0
    • 25.0.0.0rc1
    • 26.0.0
    • 26.0.0.0rc1
    • 26.1.0
    • 26.1.1
    • 27.0.0
    • 27.0.0.0rc1
    • 27.0.1
    • 28.0.0
    • 28.0.1
    • 29.0.0
    • 29.0.1
    Affected ranges
    • ECOSYSTEM: ≥ 14.0.0, < 27.0.2 ∪ ≥ 28.0.0, < 28.0.2 ∪ ≥ 29.0.0, < 29.0.2

    Update to 27.0.2; Update to 28.0.2; Update to 29.0.2

  • keystone 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
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • keystone 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
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • keystone 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
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • keystone 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
    Affected ranges
    • ECOSYSTEM: < 2:21.0.1-0ubuntu2.4

    Update to 2:21.0.1-0ubuntu2.4

  • keystone 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
    Affected ranges
    • ECOSYSTEM: < 2:25.0.0-0ubuntu1.4

    Update to 2:25.0.0-0ubuntu1.4

  • keystone 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
    Affected ranges
    • ECOSYSTEM: < 2:28.0.0-0ubuntu1.3

    Update to 2:28.0.0-0ubuntu1.3

  • keystone Ubuntu:26.04:LTS

    Versions
    • 2:28.0.0-0ubuntu1
    • 2:28.0.0-0ubuntu2
    • 2:28.0.0+git20260119.61.8a42793e7-0ubuntu1
    • 2:29.0.0~rc1-0ubuntu1
    • 2:29.0.0-0ubuntu1
    Affected ranges
    • ECOSYSTEM: < 2:29.0.0-0ubuntu1.2

    Update to 2:29.0.0-0ubuntu1.2

Original sources

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