CVE-2026-90460 Missing authorization in Keystone
Delegated authentication tokens in OpenStack Keystone can improperly create, modify, or read credentials, exposing secrets and allowing unauthorized project moves.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-90460?
CVE-2026-90460 is a high-severity missing authorization vulnerability in OpenStack Keystone, published on 11 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in OpenStack Keystone before 29.0.3. Tokens obtained via delegated authentication methods (EC2 credentials, application credentials, OAuth1 access tokens, and trusts) are not blocked from creating, modifying, or deleting credentials via the /v3/credentials API. EC2-derived tokens can additionally read credential blobs, exposing TOTP MFA seeds and other secrets. Also, PATCH /v3/credentials does not validate the requested post-update project_id, allowing any delegated token to move a credential to an unauthorized project. All Keystone deployments using delegated authentication are affected.
Weakness: CWE-863
Which versions are affected by CVE-2026-90460?
How do I fix CVE-2026-90460?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-90460 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90460 exists.
Sources
Also known as DEBIAN-CVE-2026-90460, GHSA-qfjc-4hpf-mgw2, UBUNTU-CVE-2026-90460.