{"id":"CVE-2023-4853","aliases":["GHSA-4f4r-wgv2-jjvg"],"url":"https://o3.security/vulnerability/CVE-2023-4853","summary":"Quarkus: http security policy bypass","details":"A flaw was found in Quarkus where HTTP security policies are not sanitizing certain character permutations correctly when accepting requests, resulting in incorrect evaluation of permissions. This issue could allow an attacker to bypass the security policy altogether, resulting in unauthorized endpoint access and possibly a denial of service.","published":"2023-09-20T09:47:32.150Z","modified":"2026-08-12T03:51:26.156179077Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.01215,"percentile":0.65769,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"io.quarkus:quarkus-vertx-http","fixedVersion":"2.16.11.Final"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-vertx-http","fixedVersion":"3.2.6.Final"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-vertx-http","fixedVersion":"3.3.3"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-undertow","fixedVersion":"2.16.11.Final"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-undertow","fixedVersion":"3.2.6.Final"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-undertow","fixedVersion":"3.3.3"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-csrf-reactive","fixedVersion":"2.16.11.Final"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-csrf-reactive","fixedVersion":"3.2.6.Final"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-csrf-reactive","fixedVersion":"3.3.3"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-keycloak-authorization","fixedVersion":"2.16.11.Final"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-keycloak-authorization","fixedVersion":"3.2.6.Final"},{"ecosystem":"Maven","name":"io.quarkus:quarkus-keycloak-authorization","fixedVersion":"3.3.3"}],"fix":null,"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-2023:5170"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:5310"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:5337"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:5446"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:5479"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:5480"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:6107"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:6112"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7653"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-4853"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4853.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4853"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2238034"},{"type":"ARTICLE","url":"https://access.redhat.com/security/vulnerabilities/RHSB-2023-002"},{"type":"WEB","url":"https://github.com/quarkusio/quarkus/issues/35785"},{"type":"WEB","url":"https://github.com/quarkusio/quarkus/discussions/35940"},{"type":"PACKAGE","url":"https://github.com/quarkusio/quarkus"},{"type":"WEB","url":"https://access.redhat.com/articles/11258"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:26.156179077Z"}}