CVEvulnerability

CVE-2021-20195

9.6 CRITICAL Published 2021-05-28 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-05-28
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.6 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-116, CWE-20

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.

Affected configurations

• redhat keycloak (< 12.0.3)

Related

Weakness · CWE (2)

  • CWE-116 Improper Encoding or Escaping of Output weakness
  • CWE-20 Improper Input Validation weakness

References