CVE-2016-9814

9.1 criticalEPSS 2.4%

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.

Severity

CVSS 3.0

9.1 critical

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

EPSS: 2.4% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE: CWE-399
Published: 2017-02-17
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

simplesamlphp:saml2
simplesamlphp:simplesamlphp

References

http://www.securityfocus.com/bid/94730
https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html
https://simplesamlphp.org/security/201612-01
http://www.securityfocus.com/bid/94730
https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html

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