CVE-2026-9792: Keycloak services Keycloak Vulnerable To Improper Handling Vulnerability

MODERATE
Advisory Identifier: GHSA-33j3-g875-37rp
Share
CVSS 6.5
CWE-280
Published
Advisory Summary

CVE-2026-9792 is a MODERATE (CVSS 6.5) keycloak vulnerable to improper handling vulnerability (CWE-280: Improper Handling of Insufficient Permissions or Privileges) affecting Keycloak services libraries in the Maven ecosystem. The issue involves keycloak vulnerable to improper handling of insufficient permissions or privilege. Remediation is available by upgrading affected packages to version 26.6.3.

CVE-2026-9792 at a Glance

CVE Identifier CVE-2026-9792
GHSA Identifier GHSA-33j3-g875-37rp
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-280: Improper Handling of Insufficient Permissions or Privileges
Affected Product Keycloak services
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-9792

To remediate this vulnerability, upgrade all affected Keycloak services dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.keycloak:keycloak-services fixed: 26.6.3 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-services</artifactId>
    <version>26.6.3</version>
</dependency>
org.keycloak:keycloak-services fixed: Latest secure release 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-services</artifactId>
    <version>Latest secure release</version>
</dependency>
Verify Direct and Transitive Dependencies

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-2026-9792, 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 services 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-280: Improper Handling of Insufficient Permissions or Privileges, where the product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. this may cause it to follow unexpected code paths that may leave the product in an invalid state. In Keycloak services, 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

A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When certain condition providers (client-type, client-roles, client-attributes, client-scopes) are used to enforce security restrictions, the `reject-ropc-grant` executor is silently bypassed. This allows an unauthenticated remote attacker to obtain tokens via a Resource Owner Password Credentials (ROPC) grant, even when a policy is explicitly configured to block it. This bypass can lead to unauthorized access and information disclosure.

CVE-2026-9792 Affected Keycloak services Versions

2 component(s)
Fixed Versions:
26.6.3
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-services
maven/org.keycloak/keycloak-services
Maven
≥ 26.5.0
< 26.6.3
26.6.3
org.keycloak:keycloak-services
maven/org.keycloak/keycloak-services
Maven
≤ 26.4.7

References

NVD — CVE-2026-9792 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9792
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak/issues/49436
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak/pull/49636
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak/pull/49637
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/13622ee0ffed91fd07ef444be2c858a7f356766d
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/2af73c16a4e49333779bb34bce65461d9af036a4
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/af5e3e8c60842bc1f3a78e6be414fe303f93163d
access.redhat.com/errata/rhsa-2026:25... WEB
https://access.redhat.com/errata/RHSA-2026:25097
access.redhat.com/errata/rhsa-2026:25... WEB
https://access.redhat.com/errata/RHSA-2026:25098
access.redhat.com/errata/rhsa-2026:30... WEB
https://access.redhat.com/errata/RHSA-2026:30049
access.redhat.com/errata/rhsa-2026:30... WEB
https://access.redhat.com/errata/RHSA-2026:30050
Keycloak services Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-9792
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2482459
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak

Frequently Asked Questions

What is CVE-2026-9792?
CVE-2026-9792 is a security vulnerability in Keycloak services involving Keycloak Vulnerable to Improper Handling of Insufficient Permissions or Privilege under CWE-280: Improper Handling of Insufficient Permissions or Privileges.
Which Keycloak services versions are affected?
Affected versions include releases prior to 26.6.3 across affected packages: org.keycloak:keycloak-services.
What version fixes CVE-2026-9792?
Upgrading to 26.6.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is keycloak-services affected?
Yes, org.keycloak:keycloak-services is affected in releases prior to 26.6.3, Latest secure release. Upgrade your dependency to 26.6.3, Latest secure release or later.
What is the CVSS score of CVE-2026-9792?
CVE-2026-9792 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2026-9792?
CVE-2026-9792 is classified under CWE-280: Improper Handling of Insufficient Permissions or Privileges (The product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. This may cause it to follow unexpected code paths that may leave the product in an invalid state.).
How can I check Maven dependencies for CVE-2026-9792?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.keycloak'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-33j3-g875-37rp",
  "modified" : "2026-07-01T21:22:38Z",
  "published" : "2026-05-28T06:31:09Z",
  "aliases" : [ "CVE-2026-9792" ],
  "summary" : "Keycloak Vulnerable to Improper Handling of Insufficient Permissions or Privilege",
  "details" : "A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When certain condition providers (client-type, client-roles, client-attributes, client-scopes) are used to enforce security restrictions, the `reject-ropc-grant` executor is silently bypassed. This allows an unauthenticated remote attacker to obtain tokens via a Resource Owner Password Credentials (ROPC) grant, even when a policy is explicitly configured to block it. This bypass can lead to unauthorized access and information disclosure.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "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-services"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "26.4.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-9792"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/issues/49436"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/pull/49636"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/pull/49637"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/commit/13622ee0ffed91fd07ef444be2c858a7f356766d"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/commit/2af73c16a4e49333779bb34bce65461d9af036a4"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/commit/af5e3e8c60842bc1f3a78e6be414fe303f93163d"
  }, {
    "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-2026-9792"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2482459"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/keycloak/keycloak"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-280" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-01T21:22:38Z",
    "nvd_published_at" : "2026-05-28T05:16:40Z"
  }
}