CVE-2016-9814
SimpleSAMLphp SAML2 spoof SAML responses
CVE-2016-9814 is a critical vulnerability (CVSS 9.1) in Simplesamlphp Saml2, published February 16, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.41%, the 84th percentile. Fixed in simplesamlphp/saml2 1.10.3.
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2016-9814- 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 - CVSS 2.0
- 8.5 High
AV:N/AC:L/Au:N/C:N/I:P/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2016-9814- Updated
- 2026-11-02
EUVDEUVD-2022-5133 No score
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.
- Record
EUVD-2022-5133- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r8v4-7vwj-983x
SimpleSAMLphp SAML2 spoof SAML responses
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.
- Record
GHSA-r8v4-7vwj-983x- 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 - Updated
- 2026-11-02
OSV
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.
- Record
CVE-2016-9814- 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 - Updated
- 2026-11-02
OSVDEBIAN-CVE-2016-9814
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.
- Record
DEBIAN-CVE-2016-9814- 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 - Updated
- 2026-11-02
OSVGHSA-r8v4-7vwj-983x
SimpleSAMLphp SAML2 spoof SAML responses
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.
- Record
GHSA-r8v4-7vwj-983x- 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 - Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-9814
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.
- Record
UBUNTU-CVE-2016-9814- 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 - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
simplesamlphp/saml2Packagist |
1.10 up to 1.10.3 | 1.10.3 |
simplesamlphp/saml2Packagist |
before 1.8.1 | 1.8.1 |
simplesamlphp/saml2Packagist |
1.9.0 up to 1.9.1 | 1.9.1 |
simplesamlphp/saml2Packagist |
2.0 up to 2.3.3 | 2.3.3 |
simplesamlphpDebian:12 |
before 1.14.10-1 | 1.14.10-1 |
simplesamlphpDebian:14 |
before 1.14.10-1, plus listed versions 1.10.0-11.11.0-11.12.0-11.12.0~rc1-11.12.0~rc2-1 Show 31 moreShow less1.13.0-11.13.1-11.13.1-21.13.2-11.14.0-11.14.1-11.14.2-11.14.2-21.14.3-11.14.4-11.14.5-11.14.6-11.14.7-11.14.8-11.14.9-11.6.0-11.6.1-11.6.2-11.6.3-11.6.3-21.6.3-31.7.0-11.7.0-21.8.0-11.8.1-11.8.2-11.9.0-11.9.0~rc1-11.9.0~rc2-11.9.1-11.9.2-1 |
1.14.10-1 |
simplesamlphpDebian:7 |
before 1.9.2-1+deb7u3, plus listed versions 1.9.2-11.9.2-1+deb7u11.9.2-1+deb7u2 |
1.9.2-1+deb7u3 |
simplesamlphp/saml2Packagist |
1.10 up to 1.10.3, plus listed versions v1.10v1.10.1v1.10.2 |
1.10.3 |
simplesamlphp/saml2Packagist |
before 1.8.1, plus listed versions v0.1.0v0.1.0-alphav0.3.0v0.4.0v0.4.1 Show 29 moreShow lessv0.4.2v0.5.0v0.6.0v0.6.1v0.6.2v0.6.3v0.6.4v0.7.0v0.7.1v0.8.0v0.8.1v1.0.0v1.1.0v1.2.0v1.3.0v1.3.1v1.3.2v1.4.0v1.5.0v1.5.1v1.5.2v1.5.3v1.5.4v1.6.0v1.6.1v1.7.0v1.7.1v1.7.2v1.8 |
1.8.1 |
simplesamlphp/saml2Packagist |
2.0 up to 2.3.3, plus listed versions v2.0.0v2.0.1v2.1v2.2v2.3v2.3.1v2.3.2 |
2.3.3 |
simplesamlphpUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 1.13.2-11.14.0-11.14.0-1ubuntu21.14.0-1ubuntu2+esm1 |
None known |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
securityfocus.com/bid/94730
simplesamlphp.org/security/201612-01
lists.debian.org/debian-lts-announce/2018/03/msg00001.html
nvd.nist.gov/vuln/detail/CVE-2016-9814
github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2016-9814.yaml
Show 7 moreShow less
security-tracker.debian.org/tracker/CVE-2016-9814
ubuntu.com/security/CVE-2016-9814
openwall.com/lists/oss-security/2016/12/03/5
cve.org/CVERecord?id=CVE-2016-9814