CVE-2026-4633 — LOW (3.7) — White Hats Nepal

Vulnerability 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.

CVSS Score

3.7

LOW

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Redhat	Build Of Keycloak	-

Related Weaknesses (CWE)

CWE-209

References

https://access.redhat.com/security/cve/CVE-2026-4633Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2450247ExploitIssue TrackingVendor Advisory

FAQ

What is CVE-2026-4633?

CVE-2026-4633 is a vulnerability with a CVSS score of 3.7 (LOW). 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 de...

How severe is CVE-2026-4633?

CVE-2026-4633 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4633?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Build Of Keycloak.