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Vulnerability record · CVE-2021-20323 · published 25 March 2022

CVE-2021-20323: Redhat keycloak cross-site scripting vulnerability

Redhat · Keycloak

A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.

6.1 CVSS 3.1 Medium EPSS 37% · top 1.5% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=2013577 Issue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2013577 Issue TrackingThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-20323), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.