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CVE-2016-9814

23
FAUCET Score

CVE-2016-9814 is a critical vulnerability affecting SimpleSAMLphp and simplesamlphp/saml2 libraries before versions 1.14.10 and 1.9.1 respectively, among others. It stems from improper boolean conversion in the validateSignature method, allowing remote attackers to spoof SAML responses or cause a denial of service through memory exhaustion. With a CVSS score of 9.1 (CRITICAL), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to high integrity and availability impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.14.9CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:*
1.10CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:simplesamlphp:1.10:*:*:*:*:*:*:*
<= 1.9CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:*
1.10CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:saml2:1.10:*:*:*:*:*:*:*
1.10.1CPE matchmatch criteria
cpe:2.3:a:simplesamlphp:saml2:1.10.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.39%
Probability of exploitation in next 30 days
EPSS Percentile
82.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0239 is in the 72nd percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

composerpatch availablevia ghsa
Product: simplesamlphp/saml2Fixed in: 1.10.3
composerpatch availablevia ghsa
Product: simplesamlphp/saml2Fixed in: 1.8.1
composerpatch availablevia ghsa
Product: simplesamlphp/saml2Fixed in: 1.9.1
composerpatch availablevia ghsa
Product: simplesamlphp/saml2Fixed in: 2.3.3

Vendor Advisories (1)

composerGHSA-r8v4-7vwj-983xcritical

SimpleSAMLphp SAML2 spoof SAML responses

May 14, 2022

References

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