CVE-2026-4633

LowCVSS 3.7/10Last modified Oct 22, 2026

Description

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.

Metrics

CVSS 3.1 3.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-209

Affected software

No affected versions have been published.

Timeline

Published
Mar 23, 2026
Last modified
Oct 22, 2026
NVD status
Modified

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CVE-2026-4633: Low severity, CVSS 3.7 | Vulnix