8.8

CVE-2026-42998

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Openstack ≫ Keystone Version >= 14.0.0 < 27.0.2
Openstack ≫ Keystone Version >= 28.0.0 < 28.0.2
Openstack ≫ Keystone Version >= 29.0.0 < 29.0.2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.3% 0.218
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cve@mitre.org 6 1.8 3.7
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

https://bugs.launchpad.net/keystone/+bug/2148477
Patch
Third Party Advisory
Exploit
Issue Tracking
https://security.openstack.org/ossa/OSSA-2026-015.html
Patch
Vendor Advisory