CVE-2026-4633

Published: Mar 23, 2026 Last Modified: Mar 23, 2026
ExploitDB:
Other exploit source:
Google Dorks:
LOW 3,7
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: none

Description

AI Translation Available

A flaw was found in Keycloak. A remote attacker can exploit differential error messages during the identity-first login flow when Organizations are enabled. This vulnerability allows an attacker to determine the existence of users, leading to information disclosure through user enumeration.

209

Generation of Error Message Containing Sensitive Information

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality
Potential Impacts:
Read Application Data
Applicable Platforms
Languages: Java, Not Language-Specific, PHP
Likelihood of Exploit: High
View CWE Details
https://access.redhat.com/security/cve/CVE-2026-4633
https://access.redhat.com/security/cve/CVE-2026-4633
https://bugzilla.redhat.com/show_bug.cgi?id=2450247
https://bugzilla.redhat.com/show_bug.cgi?id=2450247