{"id":"CVE-2023-6134","aliases":["GHSA-cvg2-7c3j-g36j"],"url":"https://o3.security/vulnerability/CVE-2023-6134","summary":"Keycloak: reflected xss via wildcard in oidc redirect_uri","details":"A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.","published":"2023-12-14T21:42:12.160Z","modified":"2026-08-12T03:51:44.043900448Z","cvss":{"score":4.6,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N"},"epss":{"score":0.00912,"percentile":0.58283,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","fixedVersion":"23.0.3"}],"fix":{"url":"https://github.com/keycloak/keycloak/commit/15a21bf8e4fb71f006ba9caf25b9c9d1d152cd20","label":"keycloak/keycloak@15a21bf"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html"},{"type":"WEB","url":"https://catalog.redhat.com/software/containers/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7854"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7855"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7856"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7857"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7858"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7860"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7861"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0798"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0799"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0800"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0801"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0804"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-6134"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6134.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6134"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2249673"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/security/advisories/GHSA-cvg2-7c3j-g36j"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/commit/15a21bf8e4fb71f006ba9caf25b9c9d1d152cd20"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:44.043900448Z"}}