{"id":"CVE-2023-6717","aliases":["EUVD-2024-1164","GHSA-8rmm-gm28-pj8q"],"status":"published","title":"Keycloak: xss via assertion consumer service url in saml post-binding flow","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 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enterprise application platform expansion pack"},{"vendor":"red hat","product":"red hat openshift gitops"},{"vendor":"red hat","product":"red hat process automation 7"},{"vendor":"red hat","product":"red hat single sign-on 7"},{"vendor":"red hat","product":"rhoss-1.33-rhel-8"},{"vendor":"red hat","product":"rhpam 7.13.5 async"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2024:1353","tags":["vendor-advisory","x_refsource_REDHAT","advisory","web"]},{"url":"https://access.redhat.com/errata/RHSA-2024:1867","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","advisory","web"]},{"url":"https://access.redhat.com/errata/RHSA-2024:1868","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","advisory","web"]},{"url":"https://access.redhat.com/errata/RHSA-2024:2945","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","advisory","web"]},{"url":"https://access.redhat.com/errata/RHSA-2024:4057","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","advisory","web"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-6717","tags":["vdb-entry","x_refsource_REDHAT","x_transferred","advisory","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2253952","tags":["issue-tracking","x_refsource_REDHAT","x_transferred","report","web"]},{"url":"https://github.com/keycloak/keycloak/security/advisories/GHSA-8rmm-gm28-pj8q","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6717","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8rmm-gm28-pj8q"},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","tags":["web"]},{"url":"https://catalog.redhat.com/software/containers/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6717.json","tags":["advisory"]},{"url":"https://github.com/keycloak/keycloak","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-6717","title":"Keycloak: xss via assertion consumer service url in saml post-binding flow","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.","status":"published","published":"2024-04-25T16:02:03.267Z","modified":"2026-11-05T11:37:33.229Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-05T13:18:22.408512Z"}],"euvd":[{"id":"EUVD-2024-1164","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.","status":"published","published":"2024-04-25T16:02:03Z","modified":"2026-11-05T11:37:33Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L","level":"medium"}],"updated_at":"2026-11-05T13:14:14.11293Z"}],"ghsa":[{"id":"GHSA-8rmm-gm28-pj8q","title":"Keycloak Cross-site Scripting (XSS) via assertion consumer service URL in SAML POST-binding flow","description":"Keycloak allows arbitrary URLs as SAML Assertion Consumer Service POST Binding URL (ACS), including JavaScript URIs (javascript:).\n\nAllowing JavaScript URIs in combination with HTML forms leads to JavaScript evaluation in the context of the embedding origin on form submission.\n\n#### Acknowledgements:\nSpecial thanks to Lauritz Holtmann for reporting this issue and helping us improve our project.","status":"published","published":"2024-04-17T17:33:04Z","modified":"2024-08-29T21:31:03Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L","level":"medium"}],"cwes":["CWE-20","CWE-79","CWE-601"],"updated_at":"2026-11-02T14:38:00.257632Z"}],"nvd":[{"id":"CVE-2023-6717","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.","status":"published","published":"2024-04-25T16:15:10.653Z","modified":"2026-11-05T12:17:38.68Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-05T16:36:40.983114Z"}],"osv":[{"id":"CVE-2023-6717","title":"Keycloak: xss via assertion consumer service url in saml post-binding flow","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.","status":"published","published":"2024-04-25T16:02:03.267Z","modified":"2026-11-07T02:30:19.45131512Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-07T03:07:52.010191Z"},{"id":"GHSA-8rmm-gm28-pj8q","title":"Keycloak Cross-site Scripting (XSS) via assertion consumer service URL in SAML POST-binding flow","description":"Keycloak allows arbitrary URLs as SAML Assertion Consumer Service POST Binding URL (ACS), including JavaScript URIs (javascript:).\n\nAllowing JavaScript URIs in combination with HTML forms leads to JavaScript evaluation in the context of the embedding origin on form submission.\n\n#### Acknowledgements:\nSpecial thanks to Lauritz Holtmann for reporting this issue and helping us improve our project.","status":"published","published":"2024-04-17T17:33:04Z","modified":"2026-09-10T03:50:12.800284922Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L","level":"medium"}],"cwes":["CWE-20","CWE-601","CWE-79"],"updated_at":"2026-11-02T15:46:42.78452Z"}]}}