CVE-2025-12150: Keycloak services Keycloak REST Services Has A Vulnerability

LOW
Advisory Identifier: GHSA-7g5x-9c4v-4w5r
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CVSS 3.1
CWE-347
Published
Advisory Summary

CVE-2025-12150 is a LOW (CVSS 3.1) keycloak rest services has a vulnerability (CWE-347: Improper Verification of Cryptographic Signature) affecting Keycloak services libraries in the Maven ecosystem. The issue involves keycloak rest services has a webauthn attestation statement verification bypass. Remediation is available by upgrading affected packages to version 26.4.4.

CVE-2025-12150 at a Glance

CVE Identifier CVE-2025-12150
GHSA Identifier GHSA-7g5x-9c4v-4w5r
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-347: Improper Verification of Cryptographic Signature
Affected Product Keycloak services
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.1

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

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

How to Fix CVE-2025-12150

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: 26.4.4 
<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-services</artifactId>
    <version>26.4.4</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-2025-12150, 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 26.4.4), 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-347: Improper Verification of Cryptographic Signature, where the product does not verify, or incorrectly verifies, the cryptographic signature for data. 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 WebAuthn registration component. This vulnerability allows an attacker to bypass the configured attestation policy and register untrusted or forged authenticators via submission of an attestation object with fmt: "none", even when the realm is configured to require direct attestation. This can lead to weakened authentication integrity and unauthorized authenticator registration.

CVE-2025-12150 Affected Keycloak services Versions

1 component(s)
Fixed Versions:
26.4.4
Product / Package Ecosystem Affected Versions Fixed Version
org.keycloak:keycloak-services
maven/org.keycloak/keycloak-services
Maven
< 26.4.4
26.4.4

References

NVD — CVE-2025-12150 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-12150
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak/issues/35110
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak/issues/43723
Security Fix Commit FIX COMMIT
https://github.com/keycloak/keycloak/commit/4136a677e7e24f6685ed25567e191e1003200339
access.redhat.com/errata/rhsa-2025:21... WEB
https://access.redhat.com/errata/RHSA-2025:21370
access.redhat.com/errata/rhsa-2025:21... WEB
https://access.redhat.com/errata/RHSA-2025:21371
access.redhat.com/errata/rhsa-2025:22... WEB
https://access.redhat.com/errata/RHSA-2025:22088
access.redhat.com/errata/rhsa-2025:22... WEB
https://access.redhat.com/errata/RHSA-2025:22089
Keycloak services Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2025-12150
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2406192
Keycloak services Source Repository REPOSITORY
https://github.com/keycloak/keycloak

Frequently Asked Questions

What is CVE-2025-12150?
CVE-2025-12150 is a security vulnerability in Keycloak services involving Keycloak REST Services has a WebAuthn Attestation Statement Verification Bypass under CWE-347: Improper Verification of Cryptographic Signature.
Which Keycloak services versions are affected?
Affected versions include releases prior to 26.4.4 across affected packages: org.keycloak:keycloak-services.
What version fixes CVE-2025-12150?
Upgrading to 26.4.4 (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 26.4.4. Upgrade your dependency to 26.4.4 or later.
What is the CVSS score of CVE-2025-12150?
CVE-2025-12150 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2025-12150?
CVE-2025-12150 is classified under CWE-347: Improper Verification of Cryptographic Signature (The product does not verify, or incorrectly verifies, the cryptographic signature for data.).
How can I check Maven dependencies for CVE-2025-12150?
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-7g5x-9c4v-4w5r",
  "modified" : "2026-02-28T02:44:46Z",
  "published" : "2026-02-27T09:30:29Z",
  "aliases" : [ "CVE-2025-12150" ],
  "summary" : "Keycloak REST Services has a WebAuthn Attestation Statement Verification Bypass",
  "details" : "A flaw was found in Keycloak’s WebAuthn registration component. This vulnerability allows an attacker to bypass the configured attestation policy and register untrusted or forged authenticators via submission of an attestation object with fmt: \"none\", even when the realm is configured to require direct attestation. This can lead to weakened authentication integrity and unauthorized authenticator registration.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.keycloak:keycloak-services"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "26.4.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-12150"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/issues/35110"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/issues/43723"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/keycloak/keycloak/commit/4136a677e7e24f6685ed25567e191e1003200339"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2025:21370"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2025:21371"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2025:22088"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2025:22089"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2025-12150"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2406192"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/keycloak/keycloak"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-347" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-28T02:44:46Z",
    "nvd_published_at" : "2026-02-27T09:16:15Z"
  }
}