CVE-2021-3424
5.3 MEDIUMA flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible
Published: 2021-06-01 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 5.3 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CWE
- CWE-287
Affected products
| Vendor | Product |
|---|---|
| redhat | single_sign-on |
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-3424
- [Vendor advisory]https://bugzilla.redhat.com/show_bug.cgi?id=1933320
- [Vendor advisory]https://bugzilla.redhat.com/show_bug.cgi?id=1933320
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