Description

Keycloak is vulnerable to XSS (cross-site scripting). The 'clients-registrations' endpoint does not properly sanitize user input. This vulnerability is not exploitable in the default configuration as it requires "Content-Type: application/json" in the request.

Remediation

Upgrade to the latest version of Keycloak

References

CVE-2021-20323 Detail

CVE-2021-20323 Exploitation

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Severity

Medium

Classification

CVE-2021-20323 CWE-79 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Tags

XSS Known Vulnerabilities