{"id":"CVE-2018-6519","aliases":["GHSA-hhm8-2j4g-mpgg"],"url":"https://o3.security/vulnerability/CVE-2018-6519","summary":"SimpleSAMLphp SAML2 library Regular Expression Denial of Service vulnerability","details":"The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.","published":"2018-02-02T01:29:00.230Z","modified":"2026-07-08T05:55:24.266131713Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.01696,"percentile":0.76028,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"simplesamlphp/saml2","fixedVersion":"1.10.4"},{"ecosystem":"Packagist","name":"simplesamlphp/saml2","fixedVersion":"2.3.5"},{"ecosystem":"Packagist","name":"simplesamlphp/saml2","fixedVersion":"3.1.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://simplesamlphp.org/security/201801-01"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4127"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-6519"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2018-6519.yaml"},{"type":"PACKAGE","url":"https://github.com/simplesamlphp/simplesamlphp"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:55:24.266131713Z"}}