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Vulnerability details: VCID-97b7-hgde-6bah
Vulnerability ID VCID-97b7-hgde-6bah
Aliases CVE-2016-9814
GHSA-r8v4-7vwj-983x
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-399 Resource Management Errors
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00825 https://api.first.org/data/v1/epss?cve=CVE-2016-9814
epss 0.00825 https://api.first.org/data/v1/epss?cve=CVE-2016-9814
epss 0.00825 https://api.first.org/data/v1/epss?cve=CVE-2016-9814
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-r8v4-7vwj-983x
cvssv3.1 9.1 https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2016-9814.yaml
generic_textual CRITICAL https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2016-9814.yaml
cvssv3.1 9.1 https://github.com/simplesamlphp/simplesamlphp
generic_textual CRITICAL https://github.com/simplesamlphp/simplesamlphp
cvssv3.1 9.1 https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html
generic_textual CRITICAL https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html
cvssv3.1 9.1 https://nvd.nist.gov/vuln/detail/CVE-2016-9814
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2016-9814
cvssv3.1 9.1 https://simplesamlphp.org/security/201612-01
generic_textual CRITICAL https://simplesamlphp.org/security/201612-01
cvssv3.1 9.1 http://www.securityfocus.com/bid/94730
generic_textual CRITICAL http://www.securityfocus.com/bid/94730
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2016-9814
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9814
https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2016-9814.yaml
https://github.com/simplesamlphp/saml2/commit/7008b0916426212c1cc2fc238b38ab9ebff0748c
https://github.com/simplesamlphp/saml2/pull/81
https://github.com/simplesamlphp/simplesamlphp
https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html
https://nvd.nist.gov/vuln/detail/CVE-2016-9814
https://simplesamlphp.org/security/201612-01
http://www.securityfocus.com/bid/94730
GHSA-r8v4-7vwj-983x https://github.com/advisories/GHSA-r8v4-7vwj-983x
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Found at https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2016-9814.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Found at https://github.com/simplesamlphp/simplesamlphp
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Found at https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2016-9814
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Found at https://simplesamlphp.org/security/201612-01
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Found at http://www.securityfocus.com/bid/94730
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.74911
EPSS Score 0.00825
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T20:25:59.814805+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.6.0