Medium severity · published Aug 5, 2026
CVE-2026-16071
Keycloak-services: keycloak-services: ldap entry-dn user search bypasses configured users dn boundary
5.4
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat build of Keycloak 26.4 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Keycloak 26.6 · Red Hat
All versions, or not specified · source: vendor
BO
Build OF Keycloak · Redhat
26.4 before 26.4.14; 26.6 before 26.6.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16071
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16071
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50846
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50847
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50848
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50849
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-16071
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2501720
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