CVE-2026-16071
Keycloak-services: keycloak-services: ldap entry-dn user search bypasses configured users dn boundary
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
5.4
Keycloak-services: keycloak-services: ldap entry-dn user search bypasses configured users dn boundary
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.
- Record
CVE-2026-16071- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-90, CWE-269
- Updated
- 2026-11-02
EUVDEUVD-2026-53383
5.4
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.
- Record
EUVD-2026-53383- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-m28w-c4hx-9fvg
5.4
A flaw was found in the LDAP storage provider of Keycloak, which is used to federate user...
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.
- Record
GHSA-m28w-c4hx-9fvg- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-90, CWE-269
- Updated
- 2026-11-02
NVD
5.4
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.
- Record
CVE-2026-16071- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-90, CWE-269
- Updated
- 2026-11-02
OSVBIT-keycloak-2026-16071 No score
Keycloak-services: keycloak-services: ldap entry-dn user search bypasses configured users dn boundary
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.
- Record
BIT-keycloak-2026-16071- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
keycloakBitnami |
26.4.0 up to 26.4.14, 26.6.0 up to 26.6.5 | 26.4.1426.6.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-16071 is a medium vulnerability (CVSS 5.4) in Red Hat Build Of Keycloak 26.4, published August 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. Fixed in keycloak 26.4.14.
References
access.redhat.com/errata/RHSA-2026:50846
access.redhat.com/errata/RHSA-2026:50847
access.redhat.com/errata/RHSA-2026:50848
access.redhat.com/errata/RHSA-2026:50849
access.redhat.com/security/cve/CVE-2026-16071
bugzilla.redhat.com/show_bug.cgi?id=2501720
nvd.nist.gov/vuln/detail/CVE-2026-16071
github.com/advisories/GHSA-m28w-c4hx-9fvg