What is CVE-2021-20195?

CVE-2021-20195 is a critical-severity vulnerability in Red Hat Keycloak, classified under Improper Input Validation. CVSS score: 9.6/10. Published 2021-05-28.

How severe is CVE-2021-20195?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2021-20195 known to be exploited?

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

Improper input validation in Red Hat Keycloak

CVE-2021-20195

A flaw was found in keycloak in versions before 13.0.0. A Self Stored XSS attack vector escalating to a complete account takeover is possible due to user-supplied data fields not being properly encoded and Javascript code being used to process the data. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.012 (67.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Redhat Keycloak
N/a Keycloak — versions keycloak 13.0.0

Weakness classification (CWE)

Public proof-of-concept exploits

muneebaashiq/MBProjects

References

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

Frequently asked questions

What is CVE-2021-20195?: CVE-2021-20195 is a critical-severity vulnerability in Red Hat Keycloak, classified under Improper Input Validation. CVSS score: 9.6/10. Published 2021-05-28.
How severe is CVE-2021-20195?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2021-20195 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.