CVE-2021-20323
A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.
- Published
- Mar 25, 2022
- Updated
- Aug 3, 2024
- Assigning CNA
- redhat
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NModerate · next 30 days
- Percentile
- 98.5%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.
Sources
http/cves/2021/CVE-2021-20323.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: status,word($.matchers[*].type)
- CVE-2021-20323Scanner
A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.
Proof-of-concept and analysis for CVE-2021-20323, a reflected XSS vulnerability in Keycloak's clients-registrations endpoint, with exploitation conditions, mitigation recommendations, and links to official advisories.
Responsible use
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