CVE-2026-1486: Keycloak services Keycloak Fails To Verify If Vulnerability
HIGHCVE-2026-1486 is a HIGH (CVSS 8.8) keycloak fails to verify if vulnerability (CWE-358: Improperly Implemented Security Check for Standard) affecting Keycloak services libraries in the Maven ecosystem. The issue involves keycloak fails to verify if an identity provider (idp) is enabled before issuing tokens. Remediation is available by upgrading affected packages to version 26.5.3, 26.4.9.
CVE-2026-1486 at a Glance
Security Impact
CVSS: 8.8
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:H/I:H/A:H).
How to Fix CVE-2026-1486
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.
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-services</artifactId>
<version>26.5.3</version>
</dependency><dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-services</artifactId>
<version>26.4.9</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.keycloakHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-1486, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.keycloakAnalyze 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 26.5.3), 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-358: Improperly Implemented Security Check for Standard, where the product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique. 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
CVE-2026-1486 Affected Keycloak services Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.keycloak:keycloak-services
|
Maven |
≥ 26.5.0
< 26.5.3
|
26.5.3
|
|
org.keycloak:keycloak-services
|
Maven |
< 26.4.9
|
26.4.9
|
References
Frequently Asked Questions
What is CVE-2026-1486?
Which Keycloak services versions are affected?
What version fixes CVE-2026-1486?
Is keycloak-services affected?
What is the CVSS score of CVE-2026-1486?
What CWE is associated with CVE-2026-1486?
How can I check Maven dependencies for CVE-2026-1486?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-37gf-gmxv-74wv",
"modified" : "2026-02-13T21:49:42Z",
"published" : "2026-02-09T21:31:03Z",
"aliases" : [ "CVE-2026-1486" ],
"summary" : "Keycloak fails to verify if an Identity Provider (IdP) is enabled before issuing tokens",
"details" : "A flaw was found in Keycloak. A vulnerability exists in the jwt-authorization-grant flow where the server fails to verify if an Identity Provider (IdP) is enabled before issuing tokens. The issuer lookup mechanism (lookupIdentityProviderFromIssuer) retrieves the IdP configuration but does not filter for isEnabled=false. If an administrator disables an IdP (e.g., due to a compromise or offboarding), an entity possessing that IdP's signing key can still generate valid JWT assertions that Keycloak accepts, resulting in the issuance of valid access tokens.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.keycloak:keycloak-services"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "26.5.0"
}, {
"fixed" : "26.5.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.keycloak:keycloak-services"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "26.4.9"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-1486"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/issues/46146"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/pull/46148"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/commit/176dc8902ce552056d3648c4601d519afc6fb043"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/commit/8316e8538f0037d9f998181e73122cff93a94035"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:2365"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:2366"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/security/cve/CVE-2026-1486"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2433347"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/keycloak/keycloak"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-358" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-02-10T18:35:15Z",
"nvd_published_at" : "2026-02-09T20:15:55Z"
}
}