Access of Resource Using Incompatible Type ('Type Confusion') The advisory has been revoked - it doesn't affect any version of package openstack-keystone (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-OPENSTACKKEYSTONE-16093995
- published17 Apr 2026
- disclosed14 Apr 2026
Introduced: 14 Apr 2026
CVE-2026-40683 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openstack-keystone package and not the openstack-keystone package as distributed by RHEL.
In OpenStack Keystone before 28.0.1, the LDAP identity backend does not convert the user enabled attribute to a boolean when the user_enabled_invert configuration option is False (the default). The _ldap_res_to_model method in the UserApi class only performed string-to-boolean conversion when user_enabled_invert was True. When False, the raw string value from LDAP (e.g., "FALSE") was used directly. Since non-empty strings are truthy in Python, users marked as disabled in LDAP were treated as enabled by Keystone, allowing them to authenticate and perform actions. All deployments using the LDAP identity backend without user_enabled_invert=True or user_enabled_emulation are affected.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2458472
- https://access.redhat.com/security/cve/CVE-2026-40683
- https://bugs.launchpad.net/keystone/+bug/2121152
- https://bugs.launchpad.net/keystone/+bug/2141713
- https://review.opendev.org/958205
- https://www.openwall.com/lists/oss-security/2026/04/14/9
- http://www.openwall.com/lists/oss-security/2026/08/05/17