GHSA-j9xq-j329-2xvg: Duplicate Advisory Keycloak User May Register Themselves Vulnerability

MODERATE
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CVSS 5.3
CWE-20
Published
Advisory Summary

GHSA-j9xq-j329-2xvg is a MODERATE (CVSS 5.3) keycloak user may register themselves vulnerability (CWE-20: Improper Input Validation) affecting Duplicate Advisory libraries in the Maven ecosystem. The issue involves keycloak user may register themselves with same email id of any existing user. Remediation is available in the latest vendor maintenance releases.

GHSA-j9xq-j329-2xvg at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-j9xq-j329-2xvg
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-20: Improper Input Validation
Affected Product Duplicate Advisory
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:N/I:N/A:L).

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 None (C:N)
Integrity None (I:N)
Availability Low (A:L)

How to Fix GHSA-j9xq-j329-2xvg

To remediate this vulnerability, upgrade all affected Duplicate Advisory 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-core fixed: Latest secure release 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-core</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 GHSA-j9xq-j329-2xvg, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.keycloak

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Duplicate Advisory, 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

# Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-4vc8-pg5c-vg4x. This link is maintained to preserve external references. # Original Description A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user. This may cause trouble in getting password recovery email in case the user forgets the password.

GHSA-j9xq-j329-2xvg Affected Duplicate Advisory Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-core
maven/org.keycloak/keycloak-core
Maven
≤ 19.0.1

References

NVD — GHSA-j9xq-j329-2xvg NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3754
Duplicate Advisory Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2021-3754
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=1999196
Duplicate Advisory Source Repository REPOSITORY
https://github.com/keycloak/keycloak

Frequently Asked Questions

What is GHSA-j9xq-j329-2xvg?
GHSA-j9xq-j329-2xvg is a security vulnerability in Duplicate Advisory involving Keycloak user may register themselves with same email ID of any existing user under CWE-20: Improper Input Validation.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to current release patches across affected packages: org.keycloak:keycloak-core.
What version fixes GHSA-j9xq-j329-2xvg?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is keycloak-core affected?
Yes, org.keycloak:keycloak-core is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of GHSA-j9xq-j329-2xvg?
GHSA-j9xq-j329-2xvg has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with GHSA-j9xq-j329-2xvg?
GHSA-j9xq-j329-2xvg is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check Maven dependencies for GHSA-j9xq-j329-2xvg?
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-j9xq-j329-2xvg",
  "modified" : "2024-12-20T17:48:58Z",
  "published" : "2022-08-27T00:00:45Z",
  "withdrawn" : "2024-12-20T17:48:58Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Keycloak user may register themselves with same email ID of any existing user",
  "details" : "# Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-4vc8-pg5c-vg4x. This link is maintained to preserve external references.\n\n# Original Description\n\nA flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user. This may cause trouble in getting password recovery email in case the user forgets the password.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "19.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-3754"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2021-3754"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1999196"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/keycloak/keycloak"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-09-16T18:35:23Z",
    "nvd_published_at" : "2022-08-26T16:15:00Z"
  }
}