CVE-2021-20195

CriticalCVSS 9.6/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 9.6/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-20 CWE-116

Affected software

Vendor	Product	Versions
n/a	keycloak	keycloak 13.0.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=1919143Issue Tracking, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1919143Issue Tracking, Vendor Advisory

Timeline

Published: May 28, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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