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  5. CVE-2021-20195

CVE-2021-20195: Improper Input Validation

May 28, 2021 (updated August 5, 2022)

A flaw was found in keycloak 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.

References

  • bugzilla.redhat.com/show_bug.cgi?id=1919143
  • nvd.nist.gov/vuln/detail/CVE-2021-20195

Code Behaviors & Features

Detect and mitigate CVE-2021-20195 with GitLab Dependency Scanning

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Affected versions

All versions before 12.0.3

Fixed versions

  • 12.0.3

Solution

Upgrade to version 12.0.3 or above.

Impact 9.6 CRITICAL

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

Learn more about CVSS

Weakness

  • CWE-116: Improper Encoding or Escaping of Output

Source file

maven/org.keycloak/keycloak-core/CVE-2021-20195.yml

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