CVE-2026-12388
MEDIUM
MEDIUM
Priority: 0.03
BB Relevance:
58/100
Published: 2026-06-30
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
High
UI:
None
S:
Unchanged
C:
High
I:
High
A:
None
Description
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| redhat | build_of_keycloak | - |
References & Advisories (4)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT