CVE-2026-16071
Keycloak-services: keycloak-services: ldap entry-dn user search bypasses configured users dn boundary
- State
- Published
- Severity
- 5.4 Medium
- Published
- Aug 5, 2026
- Updated
- Aug 31, 2026
- Reserved
- Jul 17, 2026
Description
A flaw was found in the LDAP storage provider of Keycloak, which is used to federate user identities from external directories. The issue occurs when a delegated administrator performs a search using a specific LDAP entry Distinguished Name (DN). Due to missing validation, the system allows lookups for users located outside the configured search boundary, leading to the disclosure of account information from unauthorized parts of the directory and unintended importing of those users into local storage.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4Red Hat |
|
Red Hat build of Keycloak 26.4.14Red Hat | |
Red Hat build of Keycloak 26.4.14Red Hat | |
Red Hat build of Keycloak 26.6Red Hat |
|
Red Hat build of Keycloak 26.6Red Hat |
|
Red Hat build of Keycloak 26.6Red Hat |
|
Red Hat build of Keycloak 26.6.5Red Hat | |
Red Hat build of Keycloak 26.6.5Red Hat | |
Red Hat build of Keycloak 26.6.5Red Hat | |
Red Hat Data Grid 8Red Hat | |
Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat | |
Red Hat Single Sign-On 7Red Hat |
References
- RHSA-2026:50846vendor-advisory
- RHSA-2026:50847vendor-advisory
- RHSA-2026:50848vendor-advisory
- RHSA-2026:50849vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-16071vdb-entry
- RHBZ#2501720issue-tracking
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