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CVE-2026-16071

🔶 medium
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Summary

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 s

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 Score
5.4
Medium
EPSS Score
0.2
Exploit Probability
Published Date
2026-08-05
First Seen: 2026-08-06
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 22.4% of all 348,756 vulnerabilities in our database.

#270,762
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 6, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Red Hat would like to thank Paul Bottinelli (Trail of Bits) for reporting this issue.
SSVC data provided by CISA
Last Modified 2026-08-10
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE IDs (Weakness Types)
CWE-269

📦 Affected Products 2

Vendor Product Status Affected Versions
redhat build_of_keycloak Affected
> 26.4 < 26.4.14
redhat build_of_keycloak Affected
> 26.6 < 26.6.5

🔗 References 6

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
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2501720
Issue Tracking Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-18967 🔶 medium 6.4 0.1 A flaw was found in the SAML broker component of Keycloak, an identity and access management solution. When configured a... 2026-08-06
CVE-2026-16443 ⚠️ high 7.4 0.2 A flaw was found in the SAML metadata import functionality of the keycloak-services component, which is the core engine ... 2026-08-05
CVE-2026-15573 ⚠️ high 8.1 0.3 A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security ... 2026-08-05
CVE-2026-16100 🔶 medium 6.5 0.3 A flaw was found in the user-event metrics recording of Keycloak. When metrics are enabled, the system records raw error... 2026-08-05
CVE-2026-16102 ⚠️ high 8.1 0.3 A flaw was found in the Dynamic Client Registration (DCR) component of Keycloak, an identity and access management solut... 2026-08-05
CVE-2026-15572 ⚠️ high 8.8 0.4 A flaw was found in Keycloak's Dynamic Client Registration (DCR) security policy management. The "Allowed Protocol Mappe... 2026-08-05
These CVEs affect the same products