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Vulnerability record · CVE-2016-9814 · published 17 February 2017

CVE-2016-9814: Simplesamlphp vulnerability

SSimplesamlphp · Simplesamlphp

The validateSignature method in the SAML2\Utils class in SimpleSAMLphp before 1.14.10 and simplesamlphp/saml2 library before 1.9.1, 1.10.x before 1.10.3, and 2.x before 2.3.3 allows remote attackers to spoof SAML responses or possibly cause a denial of service (memory consumption) by leveraging improper conversion of return values to boolean.

9.1 CVSS 3.0 Critical EPSS 2.4% · top 16.5% CWE-399 · CWE-399
9.1CVSS 3.0 base score, v2 8.5
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

The validateSignature method in the SAML2\Utils class in SimpleSAMLphp before 1.14.10 and simplesamlphp/saml2 library before 1.9.1, 1.10.x before 1.10.3, and 2.x before 2.3.3 allows remote attackers to spoof SAML responses or possibly cause a denial of service (memory consumption) by leveraging improper conversion of return values to boolean.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/94730 Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html
https://simplesamlphp.org/security/201612-01 Vendor Advisory
http://www.securityfocus.com/bid/94730 Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html
https://simplesamlphp.org/security/201612-01 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-9814), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.