CVE-2021-3424

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to grant him extra privileges.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-287

Affected software

Vendor	Product	Versions
n/a	keycloak	as shipped in Red Hat Single Sign-On 7.4

References

https://bugzilla.redhat.com/show_bug.cgi?id=1933320Issue Tracking, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1933320Issue Tracking, Vendor Advisory

Timeline

Published: Jun 1, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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