Vulnerabilities in pkg:maven/org.keycloak/keycloak-broker-saml
PACKAGECVE-2026-3047 is a HIGH (CVSS 8.8) authentication bypass vulnerability (CWE-305: Authentication Bypass by Primary Weakness) affecting Keycloak broker saml libraries in the Maven ecosystem. The issue involves keycloak saml broken has authentication bypass by primary weakness. Remediation is available in the latest vendor maintenance releases.
pkg:maven/org.keycloak/keycloak-broker-saml
Vulnerability advisories affecting package pkg:maven/org.keycloak/keycloak-broker-saml. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-8cr3-vpxx-92cx | CVE-2026-3047 | HIGH | Keycloak SAML Broken has Authentication Bypass by Primary Weakness |
CVE-2026-3047 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-2026-3047
To remediate this vulnerability, upgrade all affected Keycloak broker saml 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-broker-saml</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.keycloakHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-3047, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.keycloakAnalyze the terminal output to locate any version of Keycloak broker saml 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-305: Authentication Bypass by Primary Weakness, where the authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error. In Keycloak broker saml, 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-2026-3047 Affected Keycloak broker saml Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.keycloak:keycloak-broker-saml
|
Maven |
≤ 1.8.1.Final
|
|
References
Frequently Asked Questions
What is CVE-2026-3047?
Which Keycloak broker saml versions are affected?
What version fixes CVE-2026-3047?
Is keycloak-broker-saml affected?
What is the CVSS score of CVE-2026-3047?
What CWE is associated with CVE-2026-3047?
How can I check Maven dependencies for CVE-2026-3047?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-8cr3-vpxx-92cx",
"modified" : "2026-03-06T22:32:21Z",
"published" : "2026-03-05T21:30:48Z",
"aliases" : [ "CVE-2026-3047" ],
"summary" : "Keycloak SAML Broken has Authentication Bypass by Primary Weakness",
"details" : "A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client is configured as an Identity Provider (IdP)-initiated broker landing target, it can still complete the login process and establish a Single Sign-On (SSO) session. This allows a remote attacker to gain unauthorized access to other enabled clients without re-authentication, effectively bypassing security restrictions.\n\nA fix is available at https://github.com/keycloak/keycloak/releases/tag/26.5.5.",
"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-broker-saml"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"last_affected" : "1.8.1.Final"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-3047"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:3925"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:3926"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:3947"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/errata/RHSA-2026:3948"
}, {
"type" : "WEB",
"url" : "https://access.redhat.com/security/cve/CVE-2026-3047"
}, {
"type" : "WEB",
"url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2441966"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/keycloak/keycloak"
}, {
"type" : "WEB",
"url" : "https://github.com/keycloak/keycloak/releases/tag/26.5.5"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-305" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-03-06T22:32:21Z",
"nvd_published_at" : "2026-03-05T19:16:18Z"
}
}