What is CVE-2021-20323?

CVE-2021-20323 is a medium-severity vulnerability in Red Hat Keycloak, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-03-25.

How severe is CVE-2021-20323?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-20323 known to be exploited?

17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Red Hat Keycloak

CVE-2021-20323

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

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.372 (98.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Redhat Keycloak
N/a Keycloak-services — versions keycloak 17.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-20323?: CVE-2021-20323 is a medium-severity vulnerability in Red Hat Keycloak, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-03-25.
How severe is CVE-2021-20323?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-20323 known to be exploited?: 17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.