Medium

Improper Restriction of Rendered UI Layers or Frames in Keycloak

  • Disclosed: 15.04.2020
  • Updated: 11.10.2026 12:21

A vulnerability was found in all versions of Keycloak where, the pages on the Admin Console area of the application are completely missing general HTTP security headers in HTTP-responses. This does not directly lead to a security issue, yet it might aid attackers in their efforts to exploit other problems. The flaws unnecessarily make the servers more prone to Clickjacking, channel downgrade attacks and other similar client-based attack vectors.

Affected software

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PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.keycloak:keycloak-core <= 9.0.3 no fix

References

CVSS score -
Weakness (CWE)
CWE-1021
Platform
Java / Kotlin (Maven)
Package
org.keycloak:keycloak-core
Disclosed
15.04.2020
Updated
11.10.2026 12:21

Sources and licenses

OSV / GitHub Advisory Database - GHSA-3gg7-9q2x-79fc - CC BY 4.0

Vulnerability history: org.keycloak:keycloak-core

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (49) in the archive
Total entries
49
First → latest
10.2018 02.2025
Without a fix
5
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 14
  • Medium 31
  • Low 1

Disclosures per year

  1. 2018: 9
  2. 2019: 4
  3. 2020: 4
  4. 2021: 5
  5. 2022: 17
  6. 2023: 4
  7. 2024: 5
  8. 2025: 1
  9. 2026: 0
Severity:
  1. High · 6.5 CVE-2023-6841 < 24.0.0 24.0.0
  2. High · 8.8 CVE-2023-4918 >= 22.0.2, < 22.0.3 22.0.3
  3. Critical · 9.1 CVE-2019-14837 < 8.0.0 8.0.0
  4. High · 8.8 CVE-2020-27826 < 12.0.0 12.0.0
  5. High · 7.3 CVE-2021-20202 < 13.0.0 13.0.0
  6. High · 8.8 CVE-2020-1714 < 11.0.0 11.0.0
  7. High · 8.1 CVE-2020-14389 < 12.0.0 12.0.0
  8. High · 7.2 CVE-2019-10170 < 8.0.0 8.0.0
  9. Critical · 9.6 CVE-2021-20195 < 13.0.0 13.0.0
  10. Improper Restriction of Rendered UI Layers or Frames in Keycloak this entry
    Medium CVE-2020-1728 <= 9.0.3 no fix
  11. Critical · 9.8 CVE-2020-1731 < 8.0.2 8.0.2
  12. High · 8.1 CVE-2018-14637 < 4.6.0 4.6.0
  13. High · 7.5 CVE-2014-3651 < 1.0.3 1.0.3
  14. High · 7.5 CVE-2017-2646 < 2.5.5 2.5.5
  15. High · 8.1 CVE-2016-8609 < 2.3.0 2.3.0

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