{"id":"CVE-2016-9955","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-9955","generatedAt":"2026-10-28T21:49:40.308Z","title":"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…","description":"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":"2017-02-17T02:59:14.000Z","lastModified":"2026-06-17T00:56:50.000Z","status":"Modified","sourceIdentifier":"security@debian.org","cvss":{"version":"3.0","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"},"cwe":["CWE-20"],"affected":["simplesamlphp/simplesamlphp","debian/debian linux"],"epss":{"score":0.01182,"percentile":0.67583,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.18%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/94946","tags":["Third Party Advisory","VDB Entry"],"source":"security@debian.org"},{"url":"https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html","tags":["Third Party Advisory"],"source":"security@debian.org"},{"url":"https://simplesamlphp.org/security/201612-02","tags":["Vendor Advisory"],"source":"security@debian.org"},{"url":"http://www.securityfocus.com/bid/94946","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://simplesamlphp.org/security/201612-02","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-9955","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}