BIT-keycloak-2026-16443

See a problem?
Import Source
https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-16443.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-keycloak-2026-16443
Aliases
  • CVE-2026-16443
Published
2026-08-25T11:41:53Z
Modified
2026-09-08T08:48:06Z
Summary
Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation
Details

A flaw was found in the SAML metadata import functionality of the keycloak-services component, which is the core engine for identity brokering in Red Hat Build of Keycloak. When importing identity provider metadata that lacks specific usage attributes for keys, the system incorrectly disables signature validation for SAML responses even if a signing certificate is provided. This issue allows an unauthenticated attacker to forge a SAML response and gain unauthorized access to a user account by knowing their external identifier.

Database specific 
{
    "cpes": [
        "cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:keycloak:keycloak:*:*:*:*:*:*:*:*"
    ],
    "severity": "Critical"
}
References

Affected packages

Bitnami / keycloak

Package

Name
keycloak
Purl
pkg:bitnami/keycloak

Severity

  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
26.4.0
Fixed
26.4.14
Introduced
26.6.0
Fixed
26.6.5

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-16443.json"