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CVE-2026-42998

CVE-2026-42998

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 application credential authentication plugin does not verify that the user supplied in the authentication request matches the owner of the application credential. An attacker can authenticate with their own application credential ID and secret while specifying a different user's name and domain in the request body. Keystone issues a token attributed to the victim user. The impersonated token is project-scoped and carries the intersection of the application credential's roles and the victim's actual roles on the project. This enables audit evasion, reading the victim's credentials, and acting as the victim within shared projects.

CVSS 6.0 · Medium · EPSS 0.4% · 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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