A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. This allows the attacker to inject an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure.
{
"cpes": [
"cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*",
"cpe:2.3:a:keycloak:keycloak:*:*:*:*:*:*:*:*"
],
"severity": "High"
}