Vulnerabilities in pkg:maven/org.keycloak/keycloak-server-spi-private
PACKAGECVE-2026-9791 is a MODERATE (CVSS 4.3) keycloak vulnerable to incorrect authorization vulnerability (CWE-863: Incorrect Authorization) affecting Keycloak server spi private libraries in the Maven ecosystem. The issue involves keycloak vulnerable to incorrect authorization. Remediation is available by upgrading affected packages to version 26.6.3.
pkg:maven/org.keycloak/keycloak-server-spi-private
Vulnerability advisories affecting package pkg:maven/org.keycloak/keycloak-server-spi-private. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-4q93-v92x-p89f | CVE-2026-9791 | MODERATE | Keycloak Vulnerable to Incorrect Authorization |
| GHSA-rr5q-3xwr-f323 | CVE-2026-9704 | MODERATE | Keycloak Vulnerable to Improper Validation of Specified Quantity in Input |
| GHSA-x4p7-7chp-64hq | CVE-2026-2603 | HIGH | Keycloak: Unauthorized authentication via disabled SAML Identity Provider |
| GHSA-q35r-vvhv-vx5h | CVE-2026-3190 | MODERATE | Keycloak: Missing Role Enforcement on UMA 2.0 Permission Ticket Endpoint Leads to Information Disclosure |
| GHSA-v4jw-m6rm-399h | CVE-2026-0871 | MODERATE | Keycloak Server Private SPI: Improper Access Control Allows Administrators to Bypass Attribute Visibility Restrictions and Modify Unmanaged User Profile Attributes |
| GHSA-484q-784p-8m5h | CVE-2020-10776 | MODERATE | Cross-site Scripting in keycloak |
| GHSA-f5h4-wmp5-xhg6 | CVE-2023-2585 | LOW | Client Spoofing within the Keycloak Device Authorisation Grant |
CVE-2026-9791 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
How to Fix CVE-2026-9791
To remediate this vulnerability, upgrade all affected Keycloak server spi private dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-server-spi-private</artifactId>
<version>26.6.3</version>
</dependency>
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-services</artifactId>
<version>26.6.3</version>
</dependency>
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-server-spi-private</artifactId>
<version>Latest secure release</version>
</dependency>
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-services</artifactId>
<version>Latest secure release</version>
</dependency>
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.keycloak
How to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-9791, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.keycloak
Analyze the terminal output to locate any version of Keycloak server spi private in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 26.6.3), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.keycloak command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Keycloak server spi private, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-9791 Affected Keycloak server spi private Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.keycloak:keycloak-server-spi-private
|
Maven |
≥ 26.5.0
< 26.6.3
|
26.6.3
|
|
org.keycloak:keycloak-services
|
Maven |
≥ 26.5.0
< 26.6.3
|
26.6.3
|
|
org.keycloak:keycloak-server-spi-private
|
Maven |
≤ 26.4.7
|
|
|
org.keycloak:keycloak-services
|
Maven |
≤ 26.4.7
|
|
References
Frequently Asked Questions
What is CVE-2026-9791?
Which Keycloak server spi private versions are affected?
What version fixes CVE-2026-9791?
Is keycloak-server-spi-private affected?
Is keycloak-services affected?
What is the CVSS score of CVE-2026-9791?
What CWE is associated with CVE-2026-9791?
How can I check Maven dependencies for CVE-2026-9791?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-4q93-v92x-p89f",
"modified" : "2026-07-01T21:16:48Z",
"published" : "2026-05-28T06:31:09Z",
"aliases" : [ "CVE-2026-9791" ],
"summary" : "Keycloak Vulnerable to Incorrect Authorization",
"details" : "A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.keycloak:keycloak-server-spi-private"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "26.5.0"
}, {
"fixed" : "26.6.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.keycloak:keycloak-services"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "26.5.0"
}, {
"fixed" : "26.6.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.keycloak:keycloak-server-spi-private"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"last_affected" : "26.4.7"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.keycloak:keycloak-services"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"last_affected" : "26.4.7"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-9791"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/issues/49431"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/pull/49541"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/pull/49678"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/pull/49680"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/commit/0e706e7c83d1e971b48656ad9e674eec6adc225b"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/commit/a77c60f2f3e0793046add44120579871e92553df"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/commit/f19e1f2b4e998116d4e321f50ecf99c0f87b862f"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:25097"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:25098"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:30049"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:30050"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/security/cve/CVE-2026-9791"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2482458"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/keycloak/keycloak"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-863" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-07-01T21:16:47Z",
"nvd_published_at" : "2026-05-28T05:16:39Z"
}
}