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Vulnerability Details :

CVE-2026-12388

Summary
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
Published At-30 Jun, 2026 | 12:00
Updated At-30 Jun, 2026 | 15:58
Rejected At-
Credits

Keycloak-broker: keycloak: privilege escalation to realm administrator via improper authorization in identity provider mapper

A flaw was found in the Identity Provider (IdP) mapper component of Keycloak, which is used to manage how user information from external services is mapped to Keycloak users. An administrator with limited permissions to manage identity providers can exploit this flaw by creating a "Hardcoded Role" mapper that assigns high-level administrative roles (like realm-admin) to themselves or others. This allows a restricted administrator to bypass security checks and gain full control over the entire realm.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:redhat
Assigner Org ID:53f830b8-0a3f-465b-8143-3b8a9948e749
Published At:30 Jun, 2026 | 12:00
Updated At:30 Jun, 2026 | 15:58
Rejected At:
â–¼CVE Numbering Authority (CNA)
Keycloak-broker: keycloak: privilege escalation to realm administrator via improper authorization in identity provider mapper

A flaw was found in the Identity Provider (IdP) mapper component of Keycloak, which is used to manage how user information from external services is mapped to Keycloak users. An administrator with limited permissions to manage identity providers can exploit this flaw by creating a "Hardcoded Role" mapper that assigns high-level administrative roles (like realm-admin) to themselves or others. This allows a restricted administrator to bypass security checks and gain full control over the entire realm.

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Build of Keycloak
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhbk/keycloak-rhel9
CPEs
  • cpe:/a:redhat:build_keycloak:
Default Status
affected
Problem Types
TypeCWE IDDescription
CWECWE-266Incorrect Privilege Assignment
Type: CWE
CWE ID: CWE-266
Description: Incorrect Privilege Assignment
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Metrics Other Info
Red Hat severity rating
value:
Moderate
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Exploits
Credits
Timeline
EventDate
Reported to Red Hat.2026-06-10 14:45:28
Made public.2026-06-30 11:49:29
Event: Reported to Red Hat.
Date: 2026-06-10 14:45:28
Event: Made public.
Date: 2026-06-30 11:49:29
Replaced By
Rejected Reason
References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-12388
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2489140
issue-tracking
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-12388
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2489140
Resource:
issue-tracking
x_refsource_REDHAT
â–¼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secalert@redhat.com
Published At:30 Jun, 2026 | 13:17
Updated At:01 Jul, 2026 | 20:26

A flaw was found in the Identity Provider (IdP) mapper component of Keycloak, which is used to manage how user information from external services is mapped to Keycloak users. An administrator with limited permissions to manage identity providers can exploit this flaw by creating a "Hardcoded Role" mapper that assigns high-level administrative roles (like realm-admin) to themselves or others. This allows a restricted administrator to bypass security checks and gain full control over the entire realm.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
N/A
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Red Hat, Inc.
redhat
>>build_of_keycloak>>-
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-266Secondarysecalert@redhat.com
CWE ID: CWE-266
Type: Secondary
Source: secalert@redhat.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://access.redhat.com/security/cve/CVE-2026-12388secalert@redhat.com
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2489140secalert@redhat.com
Vendor Advisory
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-12388
Source: secalert@redhat.com
Resource:
Vendor Advisory
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2489140
Source: secalert@redhat.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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