{"id":"CVE-2018-6521","aliases":["GHSA-qv5p-6wrc-79wg"],"url":"https://o3.security/vulnerability/CVE-2018-6521","summary":"SimpleSAMLphp Use of insecure connection charset (sqlauth module)","details":"The sqlauth module in SimpleSAMLphp before 1.15.2 relies on the MySQL utf8 charset, which truncates queries upon encountering four-byte characters. There might be a scenario in which this allows remote attackers to bypass intended access restrictions.","published":"2018-02-02T01:29:00.370Z","modified":"2026-10-24T10:31:06.449743662Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"simplesamlphp/simplesamlphp","fixedVersion":"1.15.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://simplesamlphp.org/security/201801-03"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4127"},{"type":"EVIDENCE","url":"https://lists.debian.org/debian-lts-announce/2018/02/msg00008.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-6521"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2018-6521.yaml"},{"type":"PACKAGE","url":"https://github.com/simplesamlphp/simplesamlphp"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:31:06.449743662Z"}}