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.
Metrics
Affected Vendors & Products
References
History
Thu, 28 May 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Impersonated Token Generation via Application Credential in OpenStack Keystone |
Thu, 28 May 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 28 May 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| First Time appeared |
Openstack
Openstack keystone |
|
| Weaknesses | CWE-863 | |
| CPEs | cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Openstack
Openstack keystone |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-05-28T19:38:42.097Z
Reserved: 2026-05-01T00:00:00.000Z
Link: CVE-2026-42998
Updated: 2026-05-28T19:38:26.871Z
Status : Analyzed
Published: 2026-05-28T19:16:37.483
Modified: 2026-06-02T14:50:36.337
Link: CVE-2026-42998
No data.
OpenCVE Enrichment
Updated: 2026-05-28T20:30:25Z