CVE catalog
CVE-2026-42998
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
- Severity
- Medium · CVSS 6
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.30% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | keystone | sid | 2:30.0.0-3 | fixed |
| Debian | keystone | forky | 2:30.0.0-3 | fixed |
| Debian | keystone | trixie | 2:27.0.0-3+deb13u5 | fixed |
| Debian | keystone | trixie-security | 2:27.0.0-3+deb13u6 | fixed |
| Debian | keystone | bookworm | 2:22.0.2-0+deb12u3 | fixed |
| Debian | keystone | bookworm-security | 2:22.0.2-0+deb12u6 | fixed |
| Cpe | keystone | Not reported | 2:25.0.0-0ubuntu1.4 | fixed |
| Cpe | keystone-common | Not reported | 2:25.0.0-0ubuntu1.4 | fixed |
| Cpe | keystone-doc | Not reported | 2:25.0.0-0ubuntu1.4 | fixed |
| Cpe | python3-keystone | Not reported | 2:25.0.0-0ubuntu1.4 | fixed |
| Cpe | keystone | Not reported | 27.0.2 | fixed |
| Cpe | keystone | Not reported | 28.0.2 | fixed |
| Cpe | keystone | Not reported | 29.0.2 | fixed |
| Ubuntu | keystone | pro | 2:16.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.0~b1~git2019121613.db81fee63-0ubuntu1 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.0~b2~git2020020513.99733f172-0ubuntu1 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.0~b3~git2020032415.9f9040257-0ubuntu1 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.0~b3~git2020032415.9f9040257-0ubuntu2 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.0~b3~git2020041013.7bb6314e4-0ubuntu1 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.0-0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.1-0ubuntu1 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.1-0ubuntu2 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.1-0ubuntu2+esm1 | vulnerable |
| Ubuntu | keystone | pro | 2:17.0.1-0ubuntu2+esm2 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:20.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:20.0.0+git2021120815.2ddf8f321-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:20.0.0+git2022011217.771c943ad-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:20.0.0+git2022030313.a3fc9e7c3-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:21.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:21.0.1-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:21.0.1-0ubuntu2 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:21.0.1-0ubuntu2.1 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:21.0.1-0ubuntu2.2 | vulnerable |
| Ubuntu | keystone | 22.04 | 2:21.0.1-0ubuntu2.4 | fixed |
| Ubuntu | keystone | 24.04 | 2:24.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 24.04 | 2:24.0.0+git2024011916.adfa92b4-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 24.04 | 2:25.0.0~rc1-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 24.04 | 2:25.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 24.04 | 2:25.0.0-0ubuntu1.1 | vulnerable |
| Ubuntu | keystone | 24.04 | 2:25.0.0-0ubuntu1.2 | vulnerable |
| Ubuntu | keystone | 24.04 | 2:25.0.0-0ubuntu1.4 | fixed |
| Ubuntu | keystone | 25.10 | 2:27.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 25.10 | 2:27.0.0+git2025080113.e066e18ab-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 25.10 | 2:28.0.0~rc1-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 25.10 | 2:28.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 25.10 | 2:28.0.0-0ubuntu1.1 | vulnerable |
| Ubuntu | keystone | 25.10 | 2:28.0.0-0ubuntu1.3 | fixed |
| Ubuntu | keystone | 26.04 | 2:28.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 26.04 | 2:28.0.0-0ubuntu2 | vulnerable |
| Ubuntu | keystone | 26.04 | 2:28.0.0+git20260119.61.8a42793e7-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 26.04 | 2:29.0.0~rc1-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 26.04 | 2:29.0.0-0ubuntu1 | vulnerable |
| Ubuntu | keystone | 26.04 | 2:29.0.0-0ubuntu1.2 | fixed |
| Cpe | keystone | Not reported | 29.0.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | keystone | source | sid | 2:29.0.1-2 | not yet assigned | Not reported | Not reported |
| Debian | keystone | source | forky | 2:29.0.1-2 | not yet assigned | Not reported | Not reported |
| Debian | keystone | source | trixie | 2:27.0.0-3+deb13u4 | not yet assigned | Not reported | Not reported |
| Debian | keystone | source | bookworm | 2:22.0.2-0+deb12u3 | not yet assigned | Not reported | Not reported |
| Cpe | keystone | cpe | Not reported | 2:25.0.0-0ubuntu1.4 | Not reported | Not reported | Not reported |
| Cpe | keystone-common | cpe | Not reported | 2:25.0.0-0ubuntu1.4 | Not reported | Not reported | Not reported |
| Cpe | keystone-doc | cpe | Not reported | 2:25.0.0-0ubuntu1.4 | Not reported | Not reported | Not reported |
| Cpe | python3-keystone | cpe | Not reported | 2:25.0.0-0ubuntu1.4 | Not reported | Not reported | Not reported |
| Cpe | keystone | cpe | Not reported | 27.0.2 | Not reported | Not reported | Not reported |
| Cpe | keystone | cpe | Not reported | 28.0.2 | Not reported | Not reported | Not reported |
| Cpe | keystone | cpe | Not reported | 29.0.2 | Not reported | Not reported | Not reported |
| Ubuntu | keystone | deb | 22.04 | 2:21.0.1-0ubuntu2.4 | Not reported | UBUNTU-CVE-2026-42998 | Not reported |
| Ubuntu | keystone | deb | 24.04 | 2:25.0.0-0ubuntu1.4 | Not reported | UBUNTU-CVE-2026-42998 | Not reported |
| Ubuntu | keystone | deb | 25.10 | 2:28.0.0-0ubuntu1.3 | Not reported | UBUNTU-CVE-2026-42998 | Not reported |
| Ubuntu | keystone | deb | 26.04 | 2:29.0.0-0ubuntu1.2 | Not reported | UBUNTU-CVE-2026-42998 | Not reported |
| Cpe | keystone | cpe | Not reported | 29.0.2 | Not reported | NVD-CVE-2026-42998 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [keystone]Fixed
Details (4)
2:22.0.2-0+deb12u3· all · bookwormFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookwormFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookworm-securityFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookworm-securityFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
- [keystone-doc]Fixed
Source package: [keystone]
Details (4)
2:22.0.2-0+deb12u3· all · bookwormFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookwormFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookworm-securityFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookworm-securityFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
- [python3-keystone]Fixed
Source package: [keystone]
Details (4)
2:22.0.2-0+deb12u3· all · bookwormFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookwormFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookworm-securityFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
2:22.0.2-0+deb12u3· all · bookworm-securityFixed · Fixed:
2:22.0.2-0+deb12u3nvd · keystone · debian · bookworm; nvd · keystone · debian · 12
[Debian 13 (Trixie)]
- [keystone]Fixed
Details (6)
2:27.0.0-3+deb13u4· all · trixieFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixieFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixie-securityFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixie-security · Historical versionFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u5· all · trixie-security · Historical versionFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u6· all · trixie-securityFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
- [keystone-doc]Fixed
Source package: [keystone]
Details (6)
2:27.0.0-3+deb13u4· all · trixieFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixieFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixie-securityFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixie-security · Historical versionFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u5· all · trixie-security · Historical versionFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u6· all · trixie-securityFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
- [python3-keystone]Fixed
Source package: [keystone]
Details (6)
2:27.0.0-3+deb13u4· all · trixieFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixieFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixie-securityFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u4· all · trixie-security · Historical versionFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u5· all · trixie-security · Historical versionFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
2:27.0.0-3+deb13u6· all · trixie-securityFixed · Fixed:
2:27.0.0-3+deb13u4nvd · keystone · debian · 13
Observed:
References
- [https://bugs.launchpad.net/keystone/+bug/2148477]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-42998]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-42998]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-42998]
- [https://security-tracker.debian.org/tracker/CVE-2026-42998]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42998.json]
- [https://security.openstack.org/ossa/OSSA-2026-015.html]
- [https://ubuntu.com/security/notices/USN-8433-1]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [Ubuntu Security Notices (USN)]