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Low

Keycloak allows cross-site scripting (XSS)

  • Disclosed: 18.02.2025
  • Updated: 11.10.2026 13:19

A vulnerability was found in Keycloak. This issue may allow a privileged attacker to use a malicious payload as the permission while creating items (Resource and Permissions) from the admin console, leading to a stored cross-site scripting (XSS) attack.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.keycloak:keycloak-core <= 26.1.2 no fix

References

CVSS score 3.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE)
CWE-20, CWE-79
Platform
Java / Kotlin (Maven)
Package
org.keycloak:keycloak-core
Disclosed
18.02.2025
Updated
11.10.2026 13:19

Sources and licenses

OSV / GitHub Advisory Database - GHSA-q4xq-445g-g6ch - 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

Severity:
  1. Keycloak allows cross-site scripting (XSS) this entry
    Low · 3.8 CVE-2024-4028 <= 26.1.2 no fix
  2. Keycloak mTLS Authentication Bypass via Reverse Proxy TLS Termination
    High · 7.1 CVE-2024-10039 < 26.0.6 26.0.6
  3. Keycloak Denial of Service vulnerability
    High · 6.5 CVE-2023-6841 < 24.0.0 24.0.0
  4. Keycloak vulnerable to Plaintext Storage of User Password
    High · 8.8 CVE-2023-4918 >= 22.0.2, < 22.0.3 22.0.3
  5. Keycloak allows anyone to register new security device or key for any user by using WebAuthn password-less login flow
    High · 7.5 CVE-2021-3632 < 15.1.0 15.1.0
  6. keycloak vulnerable to unauthorized login via mail server setup
    Critical · 9.1 CVE-2019-14837 < 8.0.0 8.0.0
  7. Authentication Bypass in keycloak
    High · 8.8 CVE-2020-27826 < 12.0.0 12.0.0
  8. Temporary Directory Hijacking Vulnerability in Keycloak
    High · 7.3 CVE-2021-20202 < 13.0.0 13.0.0
  9. Improper Input Validation in Keycloak
    High · 8.8 CVE-2020-1714 < 11.0.0 11.0.0
  10. Improper privilege management in Keycloak
    High · 8.1 CVE-2020-14389 < 12.0.0 12.0.0
  11. Privilege Defined With Unsafe Actions in Keycloak
    High · 7.2 CVE-2019-10170 < 8.0.0 8.0.0
  12. keycloak Self Stored Cross-site Scripting vulnerability
    Critical · 9.6 CVE-2021-20195 < 13.0.0 13.0.0
  13. Predictable password in Keycloak
    Critical · 9.8 CVE-2020-1731 < 8.0.2 8.0.2
  14. Improper Input Validation and Cross-Site Request Forgery in Keycloak
    High · 8.8 CVE-2019-10199 < 7.0.0 7.0.0
  15. Improper Authentication in Keycloak
    High · 8.1 CVE-2018-14637 < 4.6.0 4.6.0
  16. Keycloak vulnerable to uncontrolled resource consumption
    High · 7.5 CVE-2014-3651 < 1.0.3 1.0.3
  17. Keycloak vulnerable to infinite loop based Denial of Service
    High · 7.5 CVE-2017-2646 < 2.5.5 2.5.5
  18. Improper Authentication in org.keycloak:keycloak-core
    High · 8.1 CVE-2016-8609 < 2.3.0 2.3.0

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