LDAP Storage Provider Flaw in Keycloak Affects User Identity Federation
CVE-2026-16071

5.4MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak
Red Hat Data Grid 8
Red Hat Jboss Enterprise Application Platform Expansion Pack
Red Hat Single Sign-on 7
Vendor
CVE Published:
5 August 2026

What is CVE-2026-16071?

An identified flaw in the LDAP storage provider of Keycloak allows delegated administrators to perform searches using specific LDAP entry Distinguished Names (DN). Due to insufficient validation, this vulnerability permits lookups for users beyond the established search boundaries, leading to unintentional disclosure of account information from unauthorized sections of the directory. Consequently, this can result in the unintended importing of these users into local storage, thus compromising user data integrity and privacy.

References

https://access.redhat.com/security/cve/CVE-2026-16071
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2501720
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Paul Bottinelli (Trail of Bits) for reporting this issue.
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