{"id":"CVE-2023-6134","published":"2023-12-14T21:42:12Z","modified":"2026-09-22T03:35:20Z","title":"Keycloak: reflected xss via wildcard in oidc redirect_uri","vendor":"Red Hat","product":"Red Hat build of Keycloak 22","tier":"tail","description":{"text":"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.","provenance":"source","from":"CVE.org"},"cvss":{"score":4.6,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.01318,"percentile":0.70784,"provenance":"source"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2023:7854","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2023:7855","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2023:7856","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2023:7857","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2023:7858","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2023:7860","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2023:7861","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:0798","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:0799","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:0800","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:0801","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2024:0804","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2023-6134","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2249673","tags":["issue-tracking","x_refsource_REDHAT"]}],"priority":{"score":17.4,"factors":[{"name":"EPSS percentile","points":14.16},{"name":"CVSS severity","points":3.22}]},"vendorSlug":"red-hat","affectedVersions":[{"vendor":"Red Hat","product":"Red Hat build of Keycloak 22","versions":["all versions"]},{"vendor":"Red Hat","product":"Red Hat build of Keycloak 22","versions":["all versions"]},{"vendor":"Red Hat","product":"Red Hat build of Keycloak 22","versions":["all versions"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7.6 for RHEL 7","versions":["all versions"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7.6 for RHEL 7","versions":["all versions"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7.6 for RHEL 8","versions":["all versions"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7.6 for RHEL 8","versions":["all versions"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7.6 for RHEL 9","versions":["all versions"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7.6 for RHEL 9","versions":["all versions"]},{"vendor":"Red Hat","product":"RHEL-8 based Middleware Containers","versions":["all versions"]}],"affected":[{"ecosystem":"Maven","package":"org.keycloak:keycloak-services","vulnerableRanges":["<23.0.3"],"patched":["23.0.3"],"from":["GHSA-cvg2-7c3j-g36j"],"provenance":"source"}],"euvd":{"id":"EUVD-2023-3189","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-red-hat-build-of-keycloak-22-cve-2020-10748","parents":[{"from":"CVE-2020-10748","to":"CVE-2023-6134","relation":"incomplete-fix","confidence":"high","kind":"lineage","evidence":[{"kind":"text","provenance":"source","relation":"incomplete-fix","quote":"This flaw is the result of an incomplete fix for CVE-2020-10748.","from":"CVE.org","in":"CVE-2023-6134"}]}],"children":[{"from":"CVE-2023-6134","to":"CVE-2023-6927","relation":"bypass","confidence":"high","kind":"lineage","evidence":[{"kind":"text","provenance":"source","relation":"bypass","quote":"This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode \"form_post.jwt\" which could be used to bypass the security patch implemented to address CVE-2023-6134.","from":"CVE.org","in":"CVE-2023-6927"}]},{"from":"CVE-2023-6134","to":"CVE-2023-6291","relation":"related","confidence":"medium","kind":"lineage","evidence":[{"kind":"same-code","provenance":"machine","files":["services/src/main/java/org/keycloak/protocol/oidc/utils/RedirectUtils.java"],"commits":["https://github.com/keycloak/keycloak/commit/15a21bf8e4fb71f006ba9caf25b9c9d1d152cd20","https://github.com/keycloak/keycloak/commit/b2e91105315ccf2c1df549b4f6c5948322cbfd1b"],"basis":"shared function","functions":["relativeToAbsoluteURI"]}]}]}}