{"cve":"CVE-2023-6717","nvd":{"published":"2024-04-25T16:15:10.653","modified":"2026-10-27T05:16:52.950","status":"Deferred","description":"A flaw was found in the SAML client registration in Keycloak that could allow an administrator to register malicious JavaScript URIs as Assertion Consumer Service POST Binding URLs (ACS), posing a Cross-Site Scripting (XSS) risk. This issue may allow a malicious admin in one realm or a client with registration access to target users in different realms or applications, executing arbitrary JavaScript in their contexts upon form submission. This can enable unauthorized access and harmful actions, compromising the confidentiality, integrity, and availability of the complete KC instance.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L","score":6.0},"cwes":["CWE-79"],"references":["https://access.redhat.com/errata/RHSA-2024:1353","https://access.redhat.com/errata/RHSA-2024:1867","https://access.redhat.com/errata/RHSA-2024:1868","https://access.redhat.com/errata/RHSA-2024:2945","https://access.redhat.com/errata/RHSA-2024:4057"],"products":[],"source":"nvd","synced_at":"2026-10-27T05:38:46.379373518+00:00"},"epss":{"cve":"CVE-2023-6717","score":0.00711,"percentile":0.53288,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-8rmm-gm28-pj8q","url":"https://osv.dev/vulnerability/GHSA-8rmm-gm28-pj8q","summary":"Keycloak Cross-site Scripting (XSS) via assertion consumer service URL in SAML POST-binding flow","modified":"2026-09-10T03:50:12.800284922Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","ranges":["<22.0.10"],"fixed":["22.0.10"]},{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","ranges":[">=23.0.0 <24.0.3"],"fixed":["24.0.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}