{"id":"CVE-2016-9955","aliases":["GHSA-p9cm-r7jg-8q3g"],"url":"https://o3.security/vulnerability/CVE-2016-9955","summary":"Incorrect signature verification in SimpleSAMLphp","details":"The SimpleSAML_XML_Validator class constructor in SimpleSAMLphp before 1.14.11 might allow remote attackers to spoof signatures on SAML 1 responses or possibly cause a denial of service (memory consumption) by leveraging improper conversion of return values to boolean.","published":"2017-02-17T02:59:14.233Z","modified":"2026-07-08T05:49:09.850698360Z","cvss":{"score":6.3,"severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"simplesamlphp/simplesamlphp","fixedVersion":"1.14.11"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/94946"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html"},{"type":"ADVISORY","url":"https://simplesamlphp.org/security/201612-02"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:49:09.850698360Z"}}