YAOOK Security Advisory OSSA-2026-007

What are OSSA-2026-007 and how do they affect YAOOK?

These CVE is a vulnerability in the Keystone LDAP identity backend. When the user_enabled_invert configuration option was False (the default), Keystone did not correctly interpret the LDAP enabled attribute, causing users disabled in LDAP to be treated as enabled and allowed to authenticate. Deployments using the LDAP identity backend without user_enabled_invert=True or user_enabled_emulation are affected.

Is my cluster vulnerable?

The following images are vulnerable:
  • keystone images before 3.0.88
  • yaook release before 2.3.1
If this image is used in your cluster for the keystone-api deployment, the cluster is vulnerable.

Upgrading

A new stable release will be published according to the release cycle and hotfix releases will be produced starting now. You can upgrade to that release simply by updating your operators.
 
However, we recommend to add a YAOOK_OP_VERSIONS_OVERRIDE variable to your Keystone operator container to pull the image before the YAOOK comprehensive release is ready.
 
The best way to do this is to set the following in the values.yaml of your keystone-operator (make sure to merge this correctly with an existing values.yaml, if you have that).
operator:
    extraEnv:
    - name: YAOOK_OP_VERSIONS_OVERRIDE
    value: |
        {
            "registry.yaook.cloud/yaook/keystone-2023.2": "registry.yaook.cloud/yaook/keystone-2023.2:3.0.88",
            "registry.yaook.cloud/yaook/keystone-2024.1": "registry.yaook.cloud/yaook/keystone-2024.1:3.0.88",
            "registry.yaook.cloud/yaook/keystone-2024.2": "registry.yaook.cloud/yaook/keystone-2024.2:3.0.88",
            "registry.yaook.cloud/yaook/keystone-2025.1": "registry.yaook.cloud/yaook/keystone-2025.1:3.0.88",
            "registry.yaook.cloud/yaook/keystone-2025.2": "registry.yaook.cloud/yaook/keystone-2025.2:3.0.88"
        }
If you are not using Helm, you can add the environment variable to the env section of your keystone-operator’s Deployment’s pod template.
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