CVE-2026-4633

LOW

3.7

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.

CVE Details

CVSS v3.1 Score3.7

SeverityLOW

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

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published3/23/2026

Last Modified4/1/2026

Sourcenvd

Honeypot Sightings0

Affected Products

redhat:build_of_keycloak

Weaknesses (CWE)

CWE-209

References

https://access.redhat.com/security/cve/CVE-2026-4633(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2450247(secalert@redhat.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.